tab delimited	contribution
id	version	timestamp	contributor	data_model_version	reference	lab_names	description
20716	3	2026-07-08T15:41:57.314Z	@polarwander	3.0	10.1139/E76-108	Not Determined (For Legacy Datasets Only)	Updates to contribution 20668 associated with lithologies, recalculating the pole from site VGPs, and adding richer location metadata for the pole.
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tab delimited	locations
location	sites	location_type	result_name	result_type	result_quality	method_codes	citations	geologic_classes	lithologies	terranes	lat_s	lat_n	lon_w	lon_e	continent_ocean	country	state_province	age	age_low	age_high	age_unit	dir_tilt_correction	contact_test	pole_lat	pole_lon	pole_alpha95	pole_k	pole_n_sites	pole_reversed_perc	description
Michikamau Intrusion	1:2:3:4:5:6:7:8:9:10:11:12	Region	Michikamau Intrusion ca. 1469 Ma pole	a	g	LP-DIR-AF:LP-DIR-T:DE-BFL:DE-FM:DE-VGP:ST-C	10.1139/e76-108:10.1139/e68-111	Igneous	Anorthosite:Gabbro:Gneiss	Laurentia	54.25423873	54.57	295.5834025738	296.30266452	North America	Canada	Newfoundland and Labrador	1469	1468	1470	Ma	0	C+	-1.4	217.8	4.3	103.6	12	0.0	Paleomagnetic pole for the Michikamau Intrusion, a large layered leucotroctolite-anorthosite massif with minor late adamellite in central Labrador, combining the results of Murthy et al. (1968) and Emslie et al. (1976). Directions are in geographic (in-situ) coordinates: Murthy et al. (1968) report a negative fold test using the igneous layering, so no tilt correction is applied. The westerly, shallow characteristic magnetization is carried by titanium-free magnetite and hematite. A positive baked-contact test (Emslie et al., 1976) supports a primary, emplacement-age magnetization: baked biotite gneiss within the thermal aureole carries the intrusion direction, whereas the older Petscapiskau Group meta-andesite outside the aureole does not. Age from U-Pb baddeleyite dating of Michikamau anorthosite (1469 +/- 1 Ma; Kerr and McNicoll, 2010), superseding the U-Pb zircon ~1460 Ma of Krogh and Davis (1973). Original Murthy/Emslie site numbers are given in the site descriptions.
Petscapiskau Group	13	Region	Petscapiskau Group baked-contact reference	i	g	LP-DIR-AF:DE-DI:DE-FM:DE-BFL:ST-C:DE-VGP	10.1139/e76-108	Metamorphic	Meta Andesite	Laurentia	54.0791669615612	54.0791669615612	296.21286057	296.21286057	North America	Canada	Newfoundland and Labrador	1559	1499	1619	Ma	0								Petscapiskau Group meta-andesite (Emslie et al., 1976 site 22), the unbaked country rock outside the Michikamau thermal aureole (Rb-Sr ~1559 Ma). Its distinct northeast direction is the reference arm of the positive baked-contact test for the Michikamau Intrusion and is not a paleopole in its own right.
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tab delimited	sites
site	location	result_type	result_quality	method_codes	citations	geologic_classes	geologic_types	lithologies	lat	lon	age	age_low	age_high	age_unit	dir_tilt_correction	dir_dec	dir_inc	dir_alpha95	dir_k	dir_n_samples	vgp_lat	vgp_lon	vgp_dp	vgp_dm	description
1	Michikamau Intrusion	i	g	LP-DIR-AF:DE-FM:DE-BFL:DE-DI	10.1139/e76-108	Intrusive	Layered Intrusion	Olivine Gabbro	54.4138856917959	296.272720015976	1469	1468	1470	Ma	0	249.0	16.0	3.83	400.0	5	-5.2	228.2	2.0	3.9	Results from Fraser lake, from Michikamau intrusion. Age of the intrusion is updated with modern U-Pb age from Kerr & McNicoll (2010). There is no DOI for Kerr & McNicoll (2010) and the citation is Kerr, A., and McNicoll, V., “U-Pb ages from mafic rocks associated with orthomagmatic Ni-Cu-Co mineralization in west-central Labrador.” Newfoundland Department of Natural Resources, Geological Survey, Report 2010-1, 23-41, sample KC-Z-08-01. Site renamed from original for clarity; Site 18 in Emslie et al. (1976). No tilt correction applied as magnetization likely acquired with the rocks in their present attitudes.
2	Michikamau Intrusion	i	g	LP-DIR-AF:DE-FM:DE-BFL:DE-DI	10.1139/e76-108	Intrusive	Layered Intrusion	Olivine Gabbro	54.4083810833371	296.2543294023	1469	1468	1470	Ma	0	255.0	19.0	7.69	100.0	5	-0.6	224.1	4.2	8.0	Results from Fraser lake, from Michikamau intrusion. Age of the intrusion is updated with modern U-Pb age from Kerr & McNicoll (2010). There is no DOI for Kerr & McNicoll (2010) and the citation is Kerr, A., and McNicoll, V., “U-Pb ages from mafic rocks associated with orthomagmatic Ni-Cu-Co mineralization in west-central Labrador.” Newfoundland Department of Natural Resources, Geological Survey, Report 2010-1, 23-41, sample KC-Z-08-01. Site renamed from original for clarity; Site 19 in Emslie et al. (1976). No tilt correction applied as magnetization likely acquired with the rocks in their present attitudes.
3	Michikamau Intrusion	i	g	LP-DIR-AF:DE-FM:DE-BFL:DE-DI	10.1139/e76-108	Intrusive	Layered Intrusion	Anorthosite	54.2931547990641	295.9829366021	1469	1468	1470	Ma	0	262.0	-1.0	25.19	25.0	3	-5.1	212.2	12.6	25.2	Results from Fraser lake, from Michikamau intrusion. Age of the intrusion is updated with modern U-Pb age from Kerr & McNicoll (2010). There is no DOI for Kerr & McNicoll (2010) and the citation is Kerr, A., and McNicoll, V., “U-Pb ages from mafic rocks associated with orthomagmatic Ni-Cu-Co mineralization in west-central Labrador.” Newfoundland Department of Natural Resources, Geological Survey, Report 2010-1, 23-41, sample KC-Z-08-01. Site renamed from original for clarity; Site 23 in Emslie et al. (1976). No tilt correction applied as magnetization likely acquired with the rocks in their present attitudes.
4	Michikamau Intrusion	i	g	LP-DIR-AF:DE-FM:DE-BFL:DE-DI	10.1139/e76-108	Intrusive	Layered Intrusion	Anorthosite	54.2800956321692	295.9279651966	1469	1468	1470	Ma	0	253.0	3.0	33.9	14.286	3	-8.6	220.7	17.0	33.9	Results from Fraser lake, from Michikamau intrusion. Age of the intrusion is updated with modern U-Pb age from Kerr & McNicoll (2010). There is no DOI for Kerr & McNicoll (2010) and the citation is Kerr, A., and McNicoll, V., “U-Pb ages from mafic rocks associated with orthomagmatic Ni-Cu-Co mineralization in west-central Labrador.” Newfoundland Department of Natural Resources, Geological Survey, Report 2010-1, 23-41, sample KC-Z-08-01. Site renamed from original for clarity; Site 24 in Emslie et al. (1976). No tilt correction applied as magnetization likely acquired with the rocks in their present attitudes.
5	Michikamau Intrusion	i	g	LP-DIR-AF:DE-FM:DE-BFL:DE-DI	10.1139/e76-108	Intrusive	Layered Intrusion	Anorthosite	54.3467397573153	295.9431539136	1469	1468	1470	Ma	0	261.0	25.0	17.05	30.0	4	5.5	220.9	9.8	18.3	Results from Fraser lake, from Michikamau intrusion. Age of the intrusion is updated with modern U-Pb age from Kerr & McNicoll (2010). There is no DOI for Kerr & McNicoll (2010) and the citation is Kerr, A., and McNicoll, V., “U-Pb ages from mafic rocks associated with orthomagmatic Ni-Cu-Co mineralization in west-central Labrador.” Newfoundland Department of Natural Resources, Geological Survey, Report 2010-1, 23-41, sample KC-Z-08-01. Site renamed from original for clarity; Site 25 in Emslie et al. (1976). No tilt correction applied as magnetization likely acquired with the rocks in their present attitudes.
6	Michikamau Intrusion	i	g	LP-DIR-AF:DE-FM:DE-BFL:DE-DI	10.1139/e76-108	Metamorphic	Baked Contact	Gneiss	54.3745175103743	296.30266452	1469	1468	1470	Ma	0	262.0	13.0	19.72	16.0	5	0.7	216.6	10.3	20.1	Results from Fraser lake, from Michikamau intrusion. Age of the intrusion is updated with modern U-Pb age from Kerr & McNicoll (2010). There is no DOI for Kerr & McNicoll (2010) and the citation is Kerr, A., and McNicoll, V., “U-Pb ages from mafic rocks associated with orthomagmatic Ni-Cu-Co mineralization in west-central Labrador.” Newfoundland Department of Natural Resources, Geological Survey, Report 2010-1, 23-41, sample KC-Z-08-01. Site renamed from original for clarity; Site 13 in Emslie et al. (1976). No tilt correction applied as magnetization likely acquired with the rocks in their present attitudes.
7	Michikamau Intrusion	i	g	LP-DIR-AF:DE-FM:DE-BFL:DE-DI	10.1139/e68-111	Intrusive	Layered Intrusion	Olivine Gabbro	54.2814	296.273	1469	1468	1470	Ma	0	256.0	18.5	6.0	91.1	6	-0.3	223.1	3.8	7.3	From Murthy et al. 1968. No direct latitude/longitude values given, estimated from map and Emslie et al. 1976. Age of the intrusion is updated with modern U-Pb age from Kerr & McNicoll (2010). There is no DOI for Kerr & McNicoll (2010) and the citation is Kerr, A., and McNicoll, V., “U-Pb ages from mafic rocks associated with orthomagmatic Ni-Cu-Co mineralization in west-central Labrador.” Newfoundland Department of Natural Resources, Geological Survey, Report 2010-1, 23-41, sample KC-Z-08-01. Site renamed from original for clarity; Site 1 in Murthy et al. (1968). Igneous layering and lamination gives strike of 34º and dip of 35ºNW. No tilt correction applied as magnetization likely acquired with the rocks in their present attitudes.
8	Michikamau Intrusion	i	g	LP-DIR-AF:DE-FM:DE-BFL:DE-DI	10.1139/e68-111	Intrusive	Layered Intrusion	Anorthosite	54.3727	295.927	1469	1468	1470	Ma	0	262.5	6.5	16.0	15.3	5	-1.7	213.9	10.2	20.3	From Murthy et al. 1968. No direct latitude/longitude values given, estimated from map and Emslie et al. 1976. Age of the intrusion is updated with modern U-Pb age from Kerr & McNicoll (2010). There is no DOI for Kerr & McNicoll (2010) and the citation is Kerr, A., and McNicoll, V., “U-Pb ages from mafic rocks associated with orthomagmatic Ni-Cu-Co mineralization in west-central Labrador.” Newfoundland Department of Natural Resources, Geological Survey, Report 2010-1, 23-41, sample KC-Z-08-01. Site renamed from original for clarity; Site 2 in Murthy et al. (1968). Igneous layering and lamination gives strike of 126º and dip of 20ºNE. No tilt correction applied as magnetization likely acquired with the rocks in their present attitudes.
9	Michikamau Intrusion	i	g	LP-DIR-AF:DE-FM:DE-BFL:DE-DI	10.1139/e68-111	Intrusive	Layered Intrusion	Anorthosite	54.57	296.108	1469	1468	1470	Ma	0	259.5	22.5	26.0	5.75	5	3.5	221.4	19.6	37.0	From Murthy et al. 1968. No direct latitude/longitude values given, estimated from map and Emslie et al. 1976. Age of the intrusion is updated with modern U-Pb age from Kerr & McNicoll (2010). There is no DOI for Kerr & McNicoll (2010) and the citation is Kerr, A., and McNicoll, V., “U-Pb ages from mafic rocks associated with orthomagmatic Ni-Cu-Co mineralization in west-central Labrador.” Newfoundland Department of Natural Resources, Geological Survey, Report 2010-1, 23-41, sample KC-Z-08-01. Site renamed from original for clarity; Site 3 in Murthy et al. (1968). Igneous layering and lamination gives strike of 86º and dip of 30ºSE. No tilt correction applied as magnetization likely acquired with the rocks in their present attitudes.
10	Michikamau Intrusion	i	g	LP-DIR-AF:DE-FM:DE-BFL:DE-DI	10.1139/e68-111	Intrusive	Layered Intrusion	Anorthosite	54.52	296.023	1469	1468	1470	Ma	0	267.5	-2.5	14.0	25.6	4	-2.5	207.3	9.3	18.5	From Murthy et al. 1968. No direct latitude/longitude values given, estimated from map and Emslie et al. 1976. Age of the intrusion is updated with modern U-Pb age from Kerr & McNicoll (2010). There is no DOI for Kerr & McNicoll (2010) and the citation is Kerr, A., and McNicoll, V., “U-Pb ages from mafic rocks associated with orthomagmatic Ni-Cu-Co mineralization in west-central Labrador.” Newfoundland Department of Natural Resources, Geological Survey, Report 2010-1, 23-41, sample KC-Z-08-01. Site renamed from original for clarity; Site 4 in Murthy et al. (1968). Igneous layering and lamination gives strike of 138º and dip of 25ºNE. No tilt correction applied as magnetization likely acquired with the rocks in their present attitudes.
11	Michikamau Intrusion	i	g	LP-DIR-AF:DE-FM:DE-BFL:DE-DI	10.1139/e68-111	Intrusive	Layered Intrusion	Anorthosite	54.3843983442477	295.5834025738	1469	1468	1470	Ma	0	262.5	-9.0	6.4	94.7	5	-8.0	209.0	4.0	8.0	From Murthy et al. 1968. No direct latitude/longitude values given, estimated from map and Emslie et al. 1976. Age of the intrusion is updated with modern U-Pb age from Kerr & McNicoll (2010). There is no DOI for Kerr & McNicoll (2010) and the citation is Kerr, A., and McNicoll, V., “U-Pb ages from mafic rocks associated with orthomagmatic Ni-Cu-Co mineralization in west-central Labrador.” Newfoundland Department of Natural Resources, Geological Survey, Report 2010-1, 23-41, sample KC-Z-08-01. Site renamed from original for clarity; Site 5 in Murthy et al. (1968). Igneous layering and lamination gives strike of 132º and dip of 67ºNE. No tilt correction applied as magnetization likely acquired with the rocks in their present attitudes.
12	Michikamau Intrusion	i	g	LP-DIR-AF:DE-FM:DE-BFL:DE-DI	10.1139/e68-111	Intrusive	Layered Intrusion	Anorthosite	54.2542387303923	296.06064184826	1469	1468	1470	Ma	0	265.0	21.0	7.2	95.0	4	5.9	216.5	5.3	10.0	From Murthy et al. 1968. No direct latitude/longitude values given, estimated from map and Emslie et al. 1976. Age of the intrusion is updated with modern U-Pb age from Kerr & McNicoll (2010). There is no DOI for Kerr & McNicoll (2010) and the citation is Kerr, A., and McNicoll, V., “U-Pb ages from mafic rocks associated with orthomagmatic Ni-Cu-Co mineralization in west-central Labrador.” Newfoundland Department of Natural Resources, Geological Survey, Report 2010-1, 23-41, sample KC-Z-08-01. Site renamed from original for clarity; Site 6 in Murthy et al. (1968). Igneous layering and lamination gives strike of 130º and dip of 27ºSW. No tilt correction applied as magnetization likely acquired with the rocks in their present attitudes.
13	Petscapiskau Group	i	g	LP-DIR-AF:DE-FM:DE-BFL:ST-C:DE-DI	10.1139/e76-108	Metamorphic	Volcanic Other	Meta Andesite	54.0791669615612	296.21286057	1559	1499	1619	Ma	0	43.0	-28.0	9.23	100.0	4	-12.0	254.0	5.5	10.1	Used as a contact test to show a direction different from the intrusion. Outside of the intrusion's stable block, remains in geographic coordinates. Site renamed from original for clarity; Site 22 in Emslie et al. (1976). No tilt correction applied as magnetization likely acquired with the rocks in their present attitudes.