FIRST VERTICAL DERIVATIVE OF THE RESIDUAL MAGNETIC … · A property of the first vertical...
1
-0.432 -0.300 -0.228 -0.181 -0.149 -0.126 -0.107 -0.093 -0.081 -0.072 -0.064 -0.058 -0.052 -0.046 -0.041 -0.037 -0.034 -0.031 -0.028 -0.026 -0.024 -0.022 -0.021 -0.019 -0.018 -0.017 -0.015 -0.014 -0.013 -0.012 -0.011 -0.010 -0.009 -0.009 -0.008 -0.006 -0.005 -0.004 -0.003 -0.002 -0.000 0.001 0.003 0.004 0.006 0.008 0.010 0.012 0.014 0.017 0.021 0.025 0.031 0.040 0.051 0.064 0.080 0.101 0.135 0.186 0.269 0.392 0.626 nT/m References Hood, P.J. 1965: Gradient measurements in aeromagnetic surveying. Geophysics, vol. 30, p. 891-902. Recommended Citation Kilfoil, G.J. and Cook, L.A. 2009: First Vertical Derivative of the Residual Magnetic Field, Corner Brook Map Area (NTS 12A/13), Aeromagnetic Survey - Corner Brook Area. Geological Survey, Department of Natural Resources, Government of Newfoundland and Labrador, Map 2009-33, Open File NFLD/3058, scale 1:50 000. Maps released as part of Open File NFLD/3058 are (refer to index map below): First Vertical Derivative Map Area (NTS) Residual Magnetic Field of the Resid. Mag. Field Little Grand Lake (12A/12) Map 2009-30 Map 2009-31 Corner Brook (12A/13) Map 2009-32 Map 2009-33 Harry’s River (12B/09) Map 2009-34 Map 2009-35 Serpentine (12B/16) Map 2009-36 Map 2009-37 Bay of Islands (12G/01) Map 2009-38 Map 2009-39 Pasadena (12H/04) Map 2009-40 Map 2009-41 Lomond (12H/05) Map 2009-42 Map 2009-43 Note Open File reports and maps issued by the Geological Survey Division of the Newfoundland and Labrador Department of Natural Resources are made available for public use without being formally edited or peer reviewed. They are based upon preliminary data and evaluation. The purchaser agrees not to provide a digital reproduction or copy of this product to a third party. Derivative products should acknowledge the source of the data. Disclaimer The Geological Survey, a division of the Department of Natural Resources (the “authors and publishers”), retains the sole right to the original data and information found in any product produced. The authors and publishers assume no legal liability or responsibility for any alterations, changes or misrepresentations made by third parties with respect to these products or the original data. Furthermore, the Geological Survey assumes no liability with respect to digital reproductions or copies of original products or for derivative products made by third parties. Please consult with the Geological Survey in order to ensure originality and correctness of data and/or products. First Vertical Derivative of the Residual Magnetic Field This map was derived from data acquired during an aeromagnetic survey carried out by Geo Data Solutions GDS Inc. The survey was flown during the period November 25, 2008 to March 30, 2009, using a Piper PA-31 Navajo aircraft C-GKSA. The aircraft was equipped with three Geometrics cesium vapour magnetometers with a sensitivity of 0.005 nT, installed in the tail boom and wingtip pods. Total field data were sampled at 10 Hz. The nominal traverse and control-line spacings were, respectively, 200 m and 2000 m, and the aircraft flew at a nominal terrain clearance of 90 m. Traverse lines were oriented N50°W with orthogonal control lines. The flight path was recovered following post-flight differential corrections to the raw Global Positioning System data and inspection of ground images recorded by a vertically mounted video camera. The survey was flown on a pre-determined flight surface to minimize differences in magnetic values at the intersections of control and traverse lines. These differences were computer-analyzed to obtain a mutually levelled set of flight-line magnetic data. The levelled values were then interpolated to a 50 m grid. The first vertical derivative of the residual magnetic field is the rate of change of the magnetic field in the vertical direction. Computation of the first vertical derivative removes long-wavelength features of the magnetic field and significantly improves the resolution of closely spaced and superimposed anomalies. A property of the first vertical derivative maps is the coincidence of the zero-value contour with vertical contacts at high magnetic latitudes (Hood, 1965). Digital versions of this map can be downloaded, at no charge, from the Newfoundland and Labrador Resource Atlas (http://gis.geosurv.gov.nl.ca/), and from the Geological Survey of Newfoundland and Labrador On-Line Open File page: http://www.nr.gov.nl.ca/mines&en/geosurvey/publications/openfiles/. Corresponding digital profile and gridded data for this survey, as well as for airborne surveys flown over adjacent areas, are also available from the Newfoundland and Labrador Resource Atlas. Printed copies of this map may be obtained from the Geoscience Publication and Information Section, Geological Survey, Department of Natural Resources, Government of Newfoundland and Labrador, P.O. Box 8700, St. John’s, NL, Canada, A1B 4J6. Department: http://www.nr.gov.nl.ca/nr/ Geological Survey: http://www.nr.gov.nl.ca/mines&en/geosurvey/ E-mail: [email protected] OPEN FILE NFLD/3058 PUBLISHED 2009 49°00' 57° 30' 48°45' 58° 00' 57° 30' 57° 35' 57° 40' 57° 45' 57° 50' 57° 55' 57° 35' 57° 40' 57° 45' 57° 50' 57° 55' 58° 00' 49°00' 48°55' 48°50' 48°55' 48°50' 48°45' 54 000m.N. 54 000m.N. 54 000m.N. 54 000m.N. 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 54 000m.N. 54 000m.N. 54 000m.N. 54 000m.N. 4 0 0 0 m . E . 4 0 0 0 m . E . 4 0 0 0 m . E . 4 0 0 0 m . E . 4 0 0 0 m . E . 4 0 0 0 m . E . 6 3 6 2 6 1 6 0 5 9 5 8 5 7 5 6 5 5 5 4 5 3 5 2 5 1 5 0 4 9 4 8 4 7 4 6 4 5 4 4 4 3 4 2 4 1 4 0 3 9 3 8 3 7 3 6 3 5 3 4 3 3 3 2 3 1 3 0 2 9 2 8 2 7 4 0 0 0 m . E . 4 0 0 0 m . E . 4 0 0 0 m . E . 4 0 0 0 m . E . 4 0 0 0 m . E . 4 0 0 0 m . E . 6 3 6 2 6 1 6 0 5 9 5 8 5 7 5 6 5 5 5 4 5 3 5 2 5 1 5 0 4 9 4 8 4 7 4 6 4 5 4 4 4 3 4 2 4 1 4 0 3 9 3 8 3 7 3 6 3 5 3 4 3 3 3 2 3 1 3 0 2 9 2 8 2 7 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00 W A T S O NS P O N D B OW A T E R P A R K I ND US T R I A L P A R K R E V I R R E B M U H I ND US T R I A L P A R K K O O R B Y D A E T S M A R B L E M O U NT A I N S T A G L A KE G R A N D P O N D K O O R B S E H G U H D N O P S N N Y P T A Y L O R S NOS E B R A KE S CO V E L O NG R A NG E M O U NT A I NS H A R R I S O N H U M B E R A R M R U S S E L L CR OW HE A D L O NG R A NG E M OU NT A I NS S UM ME R S I D E I NDU S T R I A L P A R K I R I S H T O W N CORNER BROOK P R OT E CT E D A R E A L I T T L E R A P I D S M O UNT P A T R I CI A B E A R H E A D M A R G A R E T S E A L HE A D B A Y O F I S L A ND S M O U NT M U S G R A V E COU NT R Y R O A D M A R B L E M O U NT A I N G L Y N M I L L P O N D M A P L E V A L L E Y CR OW GU L CH P O I N T Y E L L O W M A R S H B U C K E T C O V E V A L L E Y L A K E S NO R T H E R N H A R B O U R G L O V E R I S L A ND G R A ND L A KE T H E NA R R O W S G R A ND L A KE M A S S E Y D R I V E D OG W O OD W I L D CO V E B R OO K L ONG R A NGE M O U NT A I NS TRANS-CANADA HIGHWAY P R OV I NCI A L P A R K P I NCHG UT L A KE TRANS-CANADA HIGHWAY CR O W H I L L HU M B E R V I L L A GE Power Line . . . . . . . . . . . . . . . Flight Line . . . . . . . . . . . . . . . . PLANIMETRIC SYMBOLS Topographic Contour . . . . . . . Drainage . . . . . . . . . . . . . . . . . Road . . . . . . . . . . . . . . . . . . . . < 14104 15200 INDEX MAP NATIONAL TOPOGRAPHICAL SYSTEM REFERENCE AND GEOPHYSICAL MAP INDEX Digital Topographic Data provided by Geomatics Canada, Natural Resources Canada NAD83 / UTM zone 21N Scale 1: 50 000 Geo Data Solutions GDS Inc., Laval, Quebec. Contract and project management by the Compilation and map production by Newfoundland and Labrador Department of Natural Resources. G.J. Kilfoil and L.A. Cook OPEN FILE NFLD/3058 (NTS 12A/13) Corner Brook Map Area AEROMAGNETIC SURVEY - CORNER BROOK AREA CORNER BROOK - NTS 12A/13 5 kilometres 4 3 2 1 0 1 kilometres BROOK POND BAKERS BROOK POND R E V I R R E B M U H R E P P U BIRCHY D N O P G I B R E V I R T U O R T WOODS . K R B N I A M E H T LAKE . K R B S E H G U H GEORGES . R E N I T N E P R E S LAKE R E V I R D N A L S I X O F BAY BAY LAKE SANDY BAKERS BROOK GADDS HARBOUR BONNE BAY GULF OF ST. LAWRENCE WESTERN BASIN GROS MORNE NATIONAL PARK ADIES POND GLENBURNIE DEER LAKE PASADENA HINDS LAKE HOWLEY DEER LAKE LITTLE PORT YORK HARBOUR BAY OF ISLANDS HUMBER ARM GILLAMS MCIVER'S ISLAND MEADOWS SERPENTINE EAST WEST ST. GEORGE'S BAY PORT AU PORT BAY STEPHENVILLE LAKE CORNER BROOK GLOVER ISLAND GRAND LAKE LITTLE G RAND LAK E RED INDIAN STAR LAKE 420 422 1 460 463 401 450 440 1 1 430 431 430 12 G/02 12 H/05 12 G/08 12 G/09 12 H/12 12 H/11 12 H/06 12 H/03 12 H/04 12 G/01 12 B/15 12 B/10 12 B/09 12 B/16 12 A/13 12 A/14 12 A/11 12 A/12 57°00' 57°30' 58°00' 58°30' 59°00' 57°00' 57°30' 58°00' 58°30' 59°00' 49°45' 49°30' 49°15' 49°00' 48°45' 48°30' 49°45' 49°30' 49°15' 49°00' 48°45' 48°30' 2K 11J NEWFOUNDLAND 2N 12J 12O km 100 50 0 Labrador 58° 56° 54° 47° 48° 49° 50° 51° 47° 48° 49° 50° 51° 54° 60° 58° 52° 56° John's Basques Port aux St. Gander Falls Grand Brook Corner 1L 11I 11O 11P 1M 1N 2C 2D 12A 12B 1K 2F 2E 2L 2M 12H 12I 12P Lake Deer 12G MAP 2009-33 THE RESIDUAL MAGNETIC FIELD FIRST VERTICAL DERIVATIVE OF Map 2009-43 Map 2009-33 Map 2009-41 Map 2009-39 Map 2009-37 Map 2009-35 Map 2009-31 MAP 2009-33 69400 68900 67500 65200 63800 65200 67500 63600 54200 54100 54000 53900 53700 53600 53500 53400 52400 52300 52200 52500 52400 52300 51300 51200 51100 51000 63700 63600 64100 64000 65600 65500 66000 67500 67400 67900 69400 69900 71400 71300 71800 73300 73800 75300 73700 73600 73500 72200 72100 72000 71700 71600 71500 70300 70200 70100 69800 69700 69600 68300 68200 68100 67800 67700 67600 66400 66300 66200 66100 65900 65800 65700 63200 63100 63000 64700 64600 64500 64400 65200 65100 65000 64900 66600 66500 66400 68600 68500 68400 68300 69100 69000 68900 70600 70500 70400 70300 71000 70900 72500 72400 72900 72800 74400 74300 74800 76300 43800 43700 43600 43500 45200 45100 45000 44900 45800 45700 45600 45500 45400 47200 47100 47000 46900 47700 47600 47500 72200 72100 72000 71900 71000 70900 70800 70700 70500 70400 70300 70200 69200 69100 69000 68800 68700 68600 68500 67500 67400 67300 67000 66900 66800 66700 65800 65700 65600 65500 65200 65100 65000 64900 64000 63900 63800 63700 63500 63400 63300 63200 63100 62200 62100 62000 61900 61700 61600 61500 61400 61300 60500 60400 60300 60200 60000 59900 59800 59700 59600 58800 58700 58600 58500 58200 58100 58000 57900 57100 57000 56900 56800 56500 56400 56300 56200 72500 72400 72900 72800 74400 74300 74800 74700 76300 76200 46500 60300 60200 60100 58800 58700 58600 58300 58200 58100 56800 56700 56600 56300 56200 56100 54800 54700 54600 54400 54300 54200 52900 52800 52700 52400 52300 52200 50900 50800 50700 50400 50300 48900 48800 48700 48500 48400 48300 60700 60600 60500 62200 62100 62700 62600 64200 64100 43900 43800 43700 45100 45000 44900 44800 45600 45500 45400 47100 47000 46900 46800 47600 47500 47400 47300 49100 49000 48900 49500 49400 49300 51000 50900 50800 51300 51200 52800 52700 52600 53200 53100 54700 54600 55200 55100 55000 45200 45100 45000 45600 45500 45400 46300 46200 46100 46800 46700 46600 47400 47300 47200 47900 47800 47700 47600 49100 49000 48900 48800 49600 49500 49400 49300 50800 50700 50600 50500 51400 51300 51200 51100 52600 52500 52400 52300 53200 53100 53000 52900 54300 54200 54100 54900 54800 54700 54600 56100 56000 55900 55800 56700 56600 56500 56400 57800 57700 57600 58400 58300 58200 58100 59600 59500 59400 59300 56200 55000 57400 45400 45300 55100 55400 55300 56600 56900 56800 58100 51700 51600 58600 58500 58400 59800 59700 60200 60100 61400 61300 61800 61700 63100 63000 62900 63500 63400 63300 44300 44200 45100 45000 45600 45500 45400 46400 46300 46200 47000 46900 46800 46700 47900 47800 47700 47600 47500 48600 48500 48400 48300 48200 50300 50200 50100 50000 43700 64700 64600 64500 65100 65000 64900 68700 68600 64100 64000 63900 63500 63400 63300 65700 65600 65500 50100 51100 52300 53800 55200 56600 57800 58000 59100 59300 60500 60700 61700 61900 62900 63100 64100 70800 70700 69500 69200 69100 63100 63000 64300 64700 64600 65900 65800 66300 66200 67500 68000 67900 65600 50200 50100 50000 49900 46200 46100 46000 45900 46700 46600 46500 46400 47900 47800 47700 47600 48300 48200 48100 49600 49500 49400 49300 45000 44900 43400 43300 52500 52400 < 1970 < 1970 1960 > 1960 > < 1950 < 1950 1940 > 1940 > < 1930 < 1930 1920 > 1920 > < 1910 < 1910 1900 > 1900 > < 1890 < 1890 < 1980 < 1980 < 1880 < 1880 1870 > 1870 > < 1860 < 1860 1850 > 1850 > < 1840 < 1840 1830 > 1 830 > < 1820 1810 > < 1800 < 3100 < 3100 3090 > 3090 > < 3080 < 3080 3070 > 3070 > < 3060 < 3060 2110 > 2110 > < 2100 < 2100 2090 > 2090 > < 2080 < 2080 2070 > 2070 > < 2060 < 2060 2050 > 2050 > < 2040 < 2040 2030 > 2030 > < 2020 < 2020 2010 > 2010 > < 2000 < 2000 1990 > 1990 > 2560 > 2560 > < 2550 < 2550 2540 > 2540 > < 2530 < 2530 2520 > 2520 > < 2510 < 2510 2500 > 2500 > < 2490 < 2490 2480 > 2480 > < 2630 < 2630 2620 > 2620 > < 2610 < 2610 2600 > 2600 > 2590 > 2590 > < 2580 < 2580 2570 > 2570 > < 2171 < 2171 2160 > 2160 > < 2150 < 2150 2140 > 2140 > < 2130 < 2130 2120 > 2120 > < 2680 < 2680 2670 > 2670 > < 2660 < 2660 2650 > 2650 > < 2640 < 2640 3050 > 3050 > < 3040 < 3040 3030 > 3030 > < 3020 < 3020 3010 > 3010 > < 3000 < 3000 2990 > 2990 > < 2980 < 2980 2970 > 2970 > < 2960 < 2960 2950 > 2950 > < 2940 < 2940 2930 > 2930 > < 2920 < 2920 2910 > 2910 > < 2900 < 2900 2890 > 2890 > < 2880 < 2880 2870 > 2870 > 2220 > 2220 > < 2210 < 2210 2200 > 2200 > < 2190 < 2190 2180 > 2180 > < 3730 < 3730 2470 > 2470 > < 2460 < 2460 2450 > 2450 > < 2440 < 2440 2430 > 2430 > < 2420 < 2420 2410 > 2410 > < 2400 < 2400 2390 > 2390 > < 2380 < 2380 2370 > 2370 > < 2360 < 2360 2350 > 2350 > < 2260 < 2260 2250 > 2250 > < 2240 < 2240 2230 > 2230 > < 2730 < 2730 2720 > 2720 > < 2710 < 2710 2700 > 2700 > < 2690 < 2690 2340 > 2340 > < 2330 < 2330 2320 > 2320 > < 2310 < 2310 2300 > 2300 > < 2290 < 2290 2280 > 2280 > < 2270 < 2270 3220 > 3220 > < 3210 < 3210 3200 > 3200 > < 3190 < 3190 3180 > 3180 > < 3110 < 3110 2860 > 2860 > < 2850 < 2850 2840 > 2840 > < 2830 < 2830 2820 > 2820 > < 2810 < 2810 2800 > 2800 > < 2790 < 2790 2780 > 2780 > < 2770 < 2770 2760 > 2760 > < 2750 < 2750 2740 > 2740 > 7251 > 7251 > < 7241 < 7241 < 7231 7201 > 7201 > < 7190 < 7190 7180 > 3230 > 3230 > 3501 > 3501 > < 3490 < 3490 3480 > 3480 > < 3470 < 3470 3460 > 3460 > < 3450 < 3450 < 3330 < 3330 3320 > 3320 > < 3310 < 3310 3300 > 3300 > < 3290 < 3290 3280 > 3280 > < 3270 < 3270 < 7330 < 7330 7320 > 7320 > < 7310 < 7310 7300 > 7300 > < 7290 < 7290 7280 > 7280 > < 7271 < 7271 7260 > 7260 > < 7340 < 7340 3260 > 3260 > < 3250 < 3250 3240 > 3240 > 7250 > 7250 > < 7240 < 7240 < 7230 < 7230 < 3800 3790 > < 3780 3770 > 3770 > < 3760 < 3760 3720 > 3720 > < 3710 < 3 710 3700 > 3700 > < 3690 < 3690 3680 > 3680 > < 3670 < 3670 3660 > 3660 > < 3650 < 3650 3640 > 3640 > < 3630 < 3630 3620 > 3620 > < 3610 < 3610 3600 > 3600 > < 3590 < 3590 3580 > 3580 > < 3570 < 3570 3560 > 3560 > < 3550 < 3550 3540 > 3540 > < 3520 < 3520 3510 > 3510 > 3440 > 3440 > < 3430 < 3430 3420 > 3420 > < 3410 < 3410 3390 > 3390 > < 3380 < 3380 3370 > 3370 > < 3360 < 3360 3350 > 3350 > < 3340 < 3340 < 3750 < 3750 3740 > 3740 > 3530 > 3530 > < 3170 < 3170 3160 > 3160 > < 3150 < 3150 3140 > 3140 > < 3130 < 3130 3120 > 3120 > 7220 > 7220 > < 7210 < 7210 3400 > 3400 >
Transcript of FIRST VERTICAL DERIVATIVE OF THE RESIDUAL MAGNETIC … · A property of the first vertical...
-0.432-0.300-0.228-0.181-0.149-0.126-0.107-0.093-0.081-0.072-0.064-0.058-0.052-0.046-0.041-0.037-0.034-0.031-0.028-0.026-0.024-0.022-0.021-0.019-0.018-0.017-0.015-0.014-0.013-0.012-0.011-0.010-0.009-0.009-0.008-0.006-0.005-0.004-0.003-0.002-0.0000.0010.0030.0040.0060.0080.0100.0120.0140.0170.0210.0250.0310.0400.0510.0640.0800.1010.1350.1860.2690.3920.626
nT/m
References Hood, P.J. 1965: Gradient measurements in aeromagnetic surveying. Geophysics, vol. 30, p. 891-902. Recommended Citation Kilfoil, G.J. and Cook, L.A. 2009: First Vertical Derivative of the Residual Magnetic Field, Corner Brook Map Area (NTS 12A/13), Aeromagnetic Survey - Corner Brook Area. Geological Survey, Department of Natural Resources, Government of Newfoundland and Labrador, Map 2009-33, Open File NFLD/3058, scale 1:50 000. Maps released as part of Open File NFLD/3058 are (refer to index map below):
First Vertical Derivative Map Area (NTS) Residual Magnetic Field of the Resid. Mag. Field
Little Grand Lake (12A/12) Map 2009-30 Map 2009-31 Corner Brook (12A/13) Map 2009-32 Map 2009-33 Harry’s River (12B/09) Map 2009-34 Map 2009-35 Serpentine (12B/16) Map 2009-36 Map 2009-37 Bay of Islands (12G/01) Map 2009-38 Map 2009-39 Pasadena (12H/04) Map 2009-40 Map 2009-41 Lomond (12H/05) Map 2009-42 Map 2009-43 Note Open File reports and maps issued by the Geological Survey Division of the Newfoundland and Labrador Department of Natural Resources are made available for public use without being formally edited or peer reviewed. They are based upon preliminary data and evaluation. The purchaser agrees not to provide a digital reproduction or copy of this product to a third party. Derivative products should acknowledge the source of the data. Disclaimer The Geological Survey, a division of the Department of Natural Resources (the “authors and publishers”), retains the sole right to the original data and information found in any product produced. The authors and publishers assume no legal liability or responsibility for any alterations, changes or misrepresentations made by third parties with respect to these products or the original data. Furthermore, the Geological Survey assumes no liability with respect to digital reproductions or copies of original products or for derivative products made by third parties. Please consult with the Geological Survey in order to ensure originality and correctness of data and/or products.
First Vertical Derivative of the Residual Magnetic Field
This map was derived from data acquired during an aeromagnetic survey carried out by Geo Data Solutions GDS Inc. The survey was flown during the period November 25, 2008 to March 30, 2009, using a Piper PA-31 Navajo aircraft C-GKSA. The aircraft was equipped with three Geometrics cesium vapour magnetometers with a sensitivity of 0.005 nT, installed in the tail boom and wingtip pods. Total field data were sampled at 10 Hz. The nominal traverse and control-line spacings were, respectively, 200 m and 2000 m, and the aircraft flew at a nominal terrain clearance of 90 m. Traverse lines were oriented N50°W with orthogonal control lines. The flight path was recovered following post-flight differential corrections to the raw Global Positioning System data and inspection of ground images recorded by a vertically mounted video camera. The survey was flown on a pre-determined flight surface to minimize differences in magnetic values at the intersections of control and traverse lines. These differences were computer-analyzed to obtain a mutually levelled set of flight-line magnetic data. The levelled values were then interpolated to a 50 m grid. The first vertical derivative of the residual magnetic field is the rate of change of the magnetic field in the vertical direction. Computation of the first vertical derivative removes long-wavelength features of the magnetic field and significantly improves the resolution of closely spaced and superimposed anomalies. A property of the first vertical derivative maps is the coincidence of the zero-value contour with vertical contacts at high magnetic latitudes (Hood, 1965). Digital versions of this map can be downloaded, at no charge, from the Newfoundland and Labrador Resource Atlas (http://gis.geosurv.gov.nl.ca/), and from the Geological Survey of Newfoundland and Labrador On-Line Open File page:
http://www.nr.gov.nl.ca/mines&en/geosurvey/publications/openfiles/. Corresponding digital profile and gridded data for this survey, as well as for airborne surveys flown over adjacent areas, are also available from the Newfoundland and Labrador Resource Atlas. Printed copies of this map may be obtained from the Geoscience Publication and Information Section, Geological Survey, Department of Natural Resources, Government of Newfoundland and Labrador, P.O. Box 8700, St. John’s, NL, Canada, A1B 4J6. Department: http://www.nr.gov.nl.ca/nr/ Geological Survey: http://www.nr.gov.nl.ca/mines&en/geosurvey/ E-mail: [email protected] OPEN FILE NFLD/3058 PUBLISHED 2009
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57°30'
48°45'
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57°35'57°40'57°45'57°50'57°55'58°00' 49°00'48° 55'
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48°4
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.N.
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5 4 00 0m. N
.5 4 00 0m
. N.
4 000m.E. 4 000m.E. 4 000m.E. 4 000m.E. 4 000m.E.4 000m.E. 63626160595857565554535251504948474645444342414039383736353433323130292827
4 000m.E. 4 000m.E. 4 000m.E. 4 000m.E. 4 000m.E.4 000m.E. 63626160595857565554535251504948474645444342414039383736353433323130292827
2726
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2 32 2
2 12 0
1 91 8
1 71 6
1 51 4
1 31 2
1 11 0
0 90 8
0 70 6
0 50 4
0 30 2
0 10 0
WATSONS POND
BOWATER PARK
INDUSTRIAL PARKREVIRR
EB
MUH
INDUSTRIAL PARK
KO
ORBYDAET
S
MARBLE MOUNTAIN
STAG LAKE
GRAND POND
KOORBS
EH
GU
H
DN
OP
SN
NY
P
TAYLORS NOSE
BRAKES COVE
LONG RANGE MOUNTAINS
HARRISONHUMBER ARM
RUSSELL
CROW HEAD
LONG RANGE MOUNTAINS
SUMMERSIDE
INDUSTRIAL PARK
IRISHTOWN
CORNER BROOK
PROTECTED AREA
LITTLE RAPIDS
MOUNT PATRICIA
BEAR HEAD
MARGARET
SEAL HEAD
BAY OF ISLANDS
MOUNT MUSGRAVE
COUNTRY ROAD
MARBLE MOUNTAIN
GLYNMILL POND
MAPLE VALLEY
CROW GULCH
POINT
YELLOW MARSH
BUCKET COVE
VALLEY LAKES
NORTHERN HARBOUR
GLOVER ISLAND
GRAND LAKE
THE NARROWS
GRAND LAKE
MASSEY DRIVE
DOGWOOD
WILD COVE BROOK
LONG RANGE MOUNTAINS
TRAN
S-CAN
ADA
HIGHW
AY
PROVINCIAL PARK
PINCHGUT LAKE
TRANS-CANADA HIGHWAY
CROW HILL
HUMBER VILLAGE
Power Line . . . . . . . . . . . . . . .
Flight Line . . . . . . . . . . . . . . . .
PLANIMETRIC SYMBOLS
Topographic Contour . . . . . . .
Drainage . . . . . . . . . . . . . . . . .
Road . . . . . . . . . . . . . . . . . . . .< 14104
15200
INDEX MAP
NATIONAL TOPOGRAPHICAL SYSTEM REFERENCE AND GEOPHYSICAL MAP INDEX
Digital Topographic Data provided by Geomatics Canada, Natural Resources Canada
NAD83 / UTM zone 21N
Scale 1: 50 000Geo Data Solutions GDS Inc., Laval, Quebec.Contract and project management by the
Compilation and map production by
Newfoundland and Labrador Department of Natural Resources.
G.J. Kilfoil and L.A. Cook
OPEN FILE NFLD/3058
(NTS 12A/13)
Corner Brook Map Area
AEROMAGNETIC SURVEY - CORNER BROOK AREA
CORNER BROOK - NTS 12A/13
5kilometres 432101 kilometres
BROOK PONDBAKERS
BROOK POND
REVI
R
REBMUH
REPPU
BIRCHY
DNOP
GIB
REVIRTUORT
WOODS
.KRBNIAM
EHT
LAKE
.KRBSEHGUH
GEORGES
.RENI
TN
EPRES
LAKE
REVIRDNALSIXOF
BAYBAY LAKE
SANDY
BAKERS BROOK
GADDS HARBOUR
BONNE BAY
GULF O
F ST.
LAW
RENCE
WESTERN
BASIN
GROS MORNE NATIONAL PARK
ADIES POND
GLENBURNIE
DEER LAKE
PASADENAHINDS LAKE
HOWLEY
DEER LAKE
LITTLE PORT
YORK HARBOUR
BAY OF ISLANDS
HUMBER ARM
GILLAMS
MCIVER'S
ISLAND
MEADOWS
SERPENTINE
EASTWEST
ST. GEORGE'S BAY
PORT AU P
ORT BAY
STEPHENVILLE
LAKE
CORNER BROOK
GLOVER IS
LAND
GRAND LA
KE
LITTLE GRAND LAKE
RED INDIAN
STAR LAKE
420
422
1
460463
401
450 440
1
1
430
431
430
12 G/02
12 H/0512 G/08
12 G/09 12 H/12 12 H/11
12 H/06
12 H/0312 H/0412 G/01
12 B/15
12 B/10 12 B/09
12 B/16 12 A/13 12 A/14
12 A/1112 A/12
57°00'57°30'58°00'58°30'59°00'
57°00'57°30'58°00'58°30'59°00'
49°45'
49°30'
49°15'
49°00'
48°45'
48°30'
49°45'
49°30'
49°15'
49°00'
48°45'
48°30'
2K
11J
NEWFOUNDLAND
2N
12J
12O
km100500
Labrador
58° 56° 54°
47°
48°
49°
50°
51°
47°
48°
49°
50°
51°
54°60° 58° 52°56°
John'sBasquesPort aux St.
Gander
FallsGrandBrook
Corner
1L11I
11O 11P 1M 1N
2C2D12A12B
1K
2F2E
2L
2M
12H
12I
12P
LakeDeer
12G
MAP 2009-33
THE RESIDUAL MAGNETIC FIELDFIRST VERTICAL DERIVATIVE OF
Map 2009-43
Map 2009-33
Map 2009-41Map 2009-39
Map 2009-37
Map 2009-35 Map 2009-31
MAP 2009-33
69400
68900
67500
65200
63800
65200
67500
63600
54200
54100
54000
53900
53700
53600
53500
53400
52400
52300
52200
52500
52400
52300
51300
51200
51100
51000
63700
63600
64100
64000
65600
65500
66000
67500
67400
67900
69400
69900
71400
71300
71800
73300
73800
75300
73700
73600
7350072200
72100
72000
71700
71600
71500
70300
70200
70100
69800
69700
69600
68300
68200
68100
67800
67700
67600
66400
66300
66200
66100
65900
65800
65700
63200
63100
63000
64700
64600
64500
64400
65200
65100
65000
64900
66600
66500
66400
68600
68500
68400
68300
69100
69000
68900
70600
70500
70400
70300
71000
70900
72500
72400
72900
72800
74400
74300
74800
76300
43800
43700
43600
4350045200
45100
45000
44900
45800
45700
45600
45500
45400
47200
47100
47000
46900
47700
47600
47500
72200
72100
72000
71900
71000
70900
70800
70700
70500
70400
70300
70200
69200
69100
69000
68800
68700
68600
6850067500
67400
67300
67000
66900
66800
66700
65800
65700
65600
65500
65200
65100
65000
64900
64000
63900
63800
63700
63500
63400
63300
63200
63100
62200
62100
62000
61900
61700
61600
61500
61400
61300
60500
60400
60300
60200
60000
59900
59800
59700
59600
58800
58700
58600
5850058200
58100
58000
57900
57100
57000
56900
56800
56500
56400
56300
56200
72500
72400
72900
72800
74400
74300
74800
74700
76300
76200
46500
60300
60200
60100
58800
58700
5860058300
58200
58100
56800
56700
56600
56300
56200
56100
54800
54700
5460054400
54300
54200
52900
52800
52700
52400
52300
52200
50900
50800
50700
50400
50300
48900
48800
4870048500
48400
48300
60700
60600
60500
62200
62100
62700
62600
64200
64100
43900
43800
43700
45100
45000
44900
44800
45600
45500
45400
47100
47000
46900
46800
47600
47500
47400
47300
49100
49000
48900
49500
49400
49300
51000
50900
50800
51300
51200
52800
52700
52600
53200
53100
54700
54600
55200
55100
55000
45200
45100
45000
45600
45500
45400
46300
46200
46100
46800
46700
46600
47400
47300
47200
47900
47800
47700
47600
49100
49000
48900
48800
49600
49500
49400
49300
50800
50700
50600
50500
51400
51300
51200
51100
52600
52500
52400
52300
53200
53100
53000
52900
54300
54200
54100
54900
54800
54700
54600
56100
56000
55900
55800
56700
56600
56500
56400
57800
57700
57600
58400
58300
58200
58100
59600
59500
59400
59300
5620
0
5500
0
5740
0
45400
45300
55100
55400
55300
56600
56900
56800
58100
51700
51600
58600
58500
58400
59800
59700
60200
60100
61400
61300
61800
61700
63100
63000
6290063500
63400
63300
4430
0
4420
0
4510
0
4500
0
4560
0
4550
0
4540
0
4640
0
4630
0
4620
0
4700
0
4690
0
4680
0
4670
0
4790
0
4780
0
4770
0
4760
0
4750
0
4860
0
4850
0
4840
0
4830
0
4820
0
5030
0
5020
0
5010
0
5000
0
4370
0
64700
64600
64500
65100
65000
64900
68700
68600
6410
0
6400
0
6390
0
6350
0
6340
0
6330
0
6570
0
6560
0
6550
0
50100
5110052300
53800
55200
56600
57800
58000
59100
59300
60500
60700
61700
61900
62900
63100
64100
70800
70700
69500
69200
69100
63100
63000
64300
64700
64600
65900
65800
66300
66200
67500
68000
67900
65600
50200
50100
50000
49900
46200
46100
46000
45900
46700
46600
46500
46400
47900
47800
47700
47600
48300
48200
48100
49600
49500
49400
49300
4500
0
4490
0
4340
0
4330
052500
52400
< 1970
< 1970
1960 >
1960 >
< 1950
< 1950
1940 >
1940 >
< 1930
< 1930
1920 >
1920 >
< 1910
< 1910
1900 >
1900 >
< 1890
< 1890
< 1980
< 1980
< 1880
< 1880
1870 >
1870 >
< 1860
< 1860
1850 >
1850 >
< 1840
< 1840
1830 >
1830 >< 18201810 >
< 1800
< 3100
< 3100
3090 >
3090 >
< 3080
< 3080
3070 >
3070 >
< 3060
< 3060
2110 >
2110 >
< 2100
< 2100
2090 >
2090 >
< 2080
< 2080
2070 >
2070 >
< 2060
< 2060
2050 >
2050 >
< 2040
< 2040
2030 >
2030 >
< 2020
< 2020
2010 >
2010 >
< 2000
< 2000
1990 >
1990 >
2560 >
2560 >
< 2550
< 2550
2540 >
2540 >
< 2530
< 2530
2520 >
2520 >
< 2510
< 2510
2500 >
2500 >
< 2490
< 2490
2480 >
2480 >
< 2630
< 2630
2620 >
2620 >
< 2610
< 2610
2600 >
2600 >
2590 >
2590 >
< 2580
< 2580
2570 >
2570 >
< 2171
< 2171
2160 >
2160 >
< 2150
< 2150
2140 >
2140 >
< 2130
< 2130
2120 >
2120 >
< 2680
< 2680
2670 >
2670 >
< 2660
< 2660
2650 >
2650 >
< 2640
< 2640
3050 >
3050 >
< 3040
< 3040
3030 >
3030 >
< 3020
< 3020
3010 >
3010 >
< 3000
< 3000
2990 >
2990 >
< 2980
< 2980
2970 >
2970 >
< 2960
< 2960
2950 >
2950 >
< 2940
< 2940
2930 >
2930 >
< 2920
< 2920
2910 >
2910 >
< 2900
< 2900
2890 >
2890 >
< 2880
< 2880
2870 >
2870 >
2220 >
2220 >
< 2210
< 2210
2200 >
2200 >
< 2190
< 2190
2180 >
2180 >
< 3730
< 3730
2470 >
2470 >
< 2460
< 2460
2450 >
2450 >
< 2440
< 2440
2430 >
2430 >
< 2420
< 2420
2410 >
2410 >
< 2400
< 2400
2390 >
2390 >
< 2380
< 2380
2370 >
2370 >
< 2360
< 2360
2350 >
2350 >
< 2260
< 2260
2250 >
2250 >
< 2240
< 2240
2230 >
2230 >
< 2730
< 2730
2720 >
2720 >
< 2710
< 2710
2700 >
2700 >
< 2690
< 2690
2340 >
2340 >
< 2330
< 2330
2320 >
2320 >
< 2310
< 2310
2300 >
2300 >
< 2290
< 2290
2280 >
2280 >
< 2270
< 2270
3220 >
3220 >
< 3210
< 3210
3200 >
3200 >
< 3190
< 3190
3180 >
3180 >
< 3110
< 3110
2860 >
2860 >
< 2850
< 2850
2840 >
2840 >
< 2830
< 2830
2820 >
2820 >
< 2810
< 2810
2800 >
2800 >
< 2790
< 2790
2780 >
2780 >
< 2770
< 2770
2760 >
2760 >
< 2750
< 2750
2740 >
2740 >
7251
>
7251
>
< 72
41
< 72
41
< 72
31
7201
>
7201
>
< 71
90
< 71
9071
80 >
3230 >
3230 >
3501 >
3501 >
< 3490
< 3490
3480 >
3480 >
< 3470
< 3470
3460 >
3460 >
< 3450
< 3450
< 3330
< 3330
3320 >
3320 >
< 3310
< 3310
3300 >
3300 >
< 3290
< 3290
3280 >
3280 >
< 3270
< 3270
< 733
0
< 73
30
7320
>
7320
>
< 73
10
< 73
10
7300
>
7300
>
< 729
0
< 72
90
7280
>
7280
>
< 727
1
< 72
71
7260
>
7260
>
< 73
40
< 73
40
3260 >
3260 >
< 3250
< 3250
3240 >
3240 >
7250
>
7250
>
< 724
0
< 72
40
< 723
0
< 72
30
< 38003790 >< 37803770 >
3770 >
< 3760
< 3760
3720 >
3720 >
< 3710
< 3710
3700 >
3700 >
< 3690
< 3690
3680 >
3680 >
< 3670
< 3670
3660 >
3660 >
< 3650
< 3650
3640 >
3640 >
< 3630
< 3630
3620 >
3620 >
< 3610
< 3610
3600 >
3600 >
< 3590
< 3590
3580 >
3580 >
< 3570
< 3570
3560 >
3560 >
< 3550
< 3550
3540 >
3540 >
< 3520
< 3520
3510 >
3510 >
3440 >
3440 >
< 3430
< 3430
3420 >
3420 >
< 3410
< 3410
3390 >
3390 >
< 3380
< 3380
3370 >
3370 >
< 3360
< 3360
3350 >
3350 >
< 3340
< 3340
< 3750
< 3750
3740 >
3740 >
3530 >
3530 >
< 3170
< 3170
3160 >
3160 >
< 3150
< 3150
3140 >
3140 >
< 3130
< 3130
3120 >
3120 >
7220
>
7220
>
< 72
10
< 72
10
3400 >
3400 >
