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Inklin Formation

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Generalised stratigraphic column of the <span class="search-highlight">Inklin</span> <span class="search-highlight">Formation</span> at Atlin Lake (fro...

Generalised stratigraphic column of the Inklin Formation at Atlin Lake (fro...

Published: 01 June 2005
Fig. 3. Generalised stratigraphic column of the Inklin Formation at Atlin Lake (from Johannson, 1994 ). Stratigraphic thicknesses shown are not estimates of total thickness but represent minima based on measured sections. Not to scale.
Journal Article

Structure, stratigraphy and petroleum resource potential of the Central Whitehorse Trough, Northern Canadian Cordillera

Joseph M. English, Gary G. Johannson, Stephen T. Johnston, Mitchell G. Mihalynuk, Martin Fowler, Kara L. Wight
Published: 01 June 2005
Bulletin of Canadian Petroleum Geology (2005) 53 (2): 130–153.
DOI: https://doi.org/10.2113/53.2.130
...Fig. 3. Generalised stratigraphic column of the Inklin Formation at Atlin Lake (from Johannson, 1994 ). Stratigraphic thicknesses shown are not estimates of total thickness but represent minima based on measured sections. Not to scale. ...
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Plot of hydrogen index versus T max for samples from the central Whitehors...

Plot of hydrogen index versus T max for samples from the central Whitehors...

Published: 01 June 2005
Fig. 9. Plot of hydrogen index versus T max for samples from the central Whitehorse Trough. ‘Low-grade’ samples form a subset of the Inklin Formation samples, for which S 2 > 0.2 and T max < 480 °C. Due to low S 2 values, T max values for the majority of other Inklin Formation samples
Journal Article

A new occurrence of the Early Jurassic brachiopod Anarhynchia from the Canadian Cordillera confirms its membership in chemosynthesis-based ecosystems

József Pálfy, Zsófia Kovács, Gregory D. Price, Attila Vörös, Gary G. Johannson
Published: 06 November 2017
Canadian Journal of Earth Sciences (2017) 54 (12): 1179–1193.
DOI: https://doi.org/10.1139/cjes-2017-0179
... and patchy, it commonly includes dimerelloid rhynchonellide brachiopods. Here we report a monospecific assemblage of Anarhynchia from a limestone boulder of early Pliensbachian (Early Jurassic) age in the Inklin Formation of the Whitehorse Trough in the Stikine terrane, from a locality at Atlin Lake...
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Journal Article

Early Jurassic evolution of the northern Stikinian arc: evidence from the Laberge Group, northwestern British Columbia

Gary G. Johannson, Paul L. Smith, Steven P. Gordey
Published: 01 July 1997
Canadian Journal of Earth Sciences (1997) 34 (7): 1030–1057.
DOI: https://doi.org/10.1139/e17-085
...Gary G. Johannson; Paul L. Smith; Steven P. Gordey Abstract This study resolves fundamental questions concerning the age, provenance, and depositional history of Laberge Group strata in the Whitehorse Trough. The Jurassic Inklin Formation straddles the Stikine and Cache Creek terranes along much...
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Plot of total organic carbon (TOC) versus residual carbon for samples from ...

Plot of total organic carbon (TOC) versus residual carbon for samples from ...

Published: 01 June 2005
Fig. 7. Plot of total organic carbon (TOC) versus residual carbon for samples from the central Whitehorse Trough. ‘Low-grade’ samples form a subset of the Inklin Formation samples, for which S 2 > 0.2 and T max < 480 °C.
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Plot of hydrogen index versus oxygen index for samples from the central Whi...

Plot of hydrogen index versus oxygen index for samples from the central Whi...

Published: 01 June 2005
Fig. 8. Plot of hydrogen index versus oxygen index for samples from the central Whitehorse Trough. ‘Low-grade’ samples form a subset of the Inklin Formation samples, for which S 2 > 0.2 and T max < 480 °C. The organic matter type in a source rock can be determined from this plot
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Outcrop and host rock of the Anarhynchia -bearing boulder. (A) View of out...

Outcrop and host rock of the Anarhynchia -bearing boulder. (A) View of out...

Published: 06 November 2017
Fig. 2. Outcrop and host rock of the Anarhynchia -bearing boulder. (A) View of outcrop of conglomerate beds in the Inklin Formation in Copper Island at Atlin Lake. Note circled hammer for scale. (B) Coarse pebble–cobble conglomerate with sparse boulders showing typical range of clast size, shape
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Bedrock geology map of the central Whitehorse Trough; this map is based in ...

Bedrock geology map of the central Whitehorse Trough; this map is based in ...

Published: 01 June 2005
. Equal area stereonet projections show contoured poles to bedding from the Inklin Formation in the central Whitehorse Trough from: (a) the fold-dominated Atlin Lake region, and (b) the thrust-dominated Taku River region. Region boundary is shown on geologic map.
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Bedrock geology map of the central Whitehorse Trough; this map is based in ...

Bedrock geology map of the central Whitehorse Trough; this map is based in ...

Published: 01 June 2005
. Equal area stereonet projections show contoured poles to bedding from the Inklin Formation in the central Whitehorse Trough from: (a) the fold-dominated Atlin Lake region, and (b) the thrust-dominated Taku River region. Region boundary is shown on geologic map.
Journal Article

Birth of the northern Cordilleran orogen, as recorded by detrital zircons in Jurassic synorogenic strata and regional exhumation in Yukon

Maurice Colpron, James L. Crowley, George Gehrels, Darrel G.F. Long, Donald C. Murphy, Luke Beranek, Luke Bickerton
Journal: Lithosphere
Publisher: GSW
Published: 01 October 2015
Lithosphere (2015) 7 (5): 541–562.
DOI: https://doi.org/10.1130/L451.1
.... 220–206 Ma) exposed west and south of Whitehorse ( Fig. 2 ; Hart et al., 1995 ; Dickie and Hein, 1995 ). Johannson et al. (1997) reported a U-Pb zircon date of ca. 187 Ma from a single clast of monzogranite in the Inklin Formation near Atlin, British Columbia, and Gordey et al. (1998) dated two...
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Journal Article

Application of remote-sensing and ground-truth techniques in determining the effects of coalbed-methane discharge waters on soils and vegetation

David C. Micale, Ronald W. Marrs
Published: 01 January 2006
Rocky Mountain Geology (2006) 41 (1): 29–43.
DOI: https://doi.org/10.2113/gsrocky.41.1.29
... Hills to the east, the Laramie Mountains to the south, and the Miles City Arch to the north ( Ayers, 1986 ; Pearson, 2002 ). The Tongue River Member of the Fort Union Formation (Paleocene in age) hosts the economically important coal deposits in the basin, estimated to be more than 550 billion short...
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Journal Article

Seismic and geological constraints on the structure and hydrocarbon potential of the northern Whitehorse trough, Yukon, Canada

Don White, Maurice Colpron, Grant Buffett
Published: 01 December 2012
Bulletin of Canadian Petroleum Geology (2012) 60 (4): 239–255.
DOI: https://doi.org/10.2113/gscpgbull.60.4.239
... Hettangian(?) to Bajocian Richthofen formation (informal nomenclature of Tempelman-Kluit, 1984 , 2009 ; equivalent to the Inklin Formation of northern British Columbia; Souther, 1971 ; Johannson et al., 1997 ; Mihalynuk, 1999 ), and a northern, in part coeval, unit of shallow marine to fluvial sandstone...
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Journal Article

Development of the Whitehorse trough as a strike-slip basin during Early to Middle Jurassic arc-continent collision in the Canadian Cordillera

Leigh H. van Drecht, Luke P. Beranek, Maurice Colpron, Adam C. Wiest
Journal: Geosphere
Published: 11 August 2022
Geosphere (2022)
DOI: https://doi.org/10.1130/GES02510.1
...., 1995; Lowey, 2004). In northern British Columbia, Inklin Formation strata (equivalent to the Richthofen formation) show that longitudinal (north-directed) Sinemurian paleoflow was replaced by transverse Pliensbachian paleoflow (Johannson et al., 1997). Conglomerate clast types include augite-phyric...
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Journal Article

The northern termination of the Cache Creek terrane in Yukon: Middle Triassic arc activity and Jurassic–Cretaceous structural imbrication

Luke Bickerton, Maurice Colpron, H. Daniel Gibson, Derek Thorkelson, James L. Crowley
Published: 16 April 2019
Canadian Journal of Earth Sciences (2020) 57 (2): 227–248.
DOI: https://doi.org/10.1139/cjes-2018-0262
... of the Kutcho assemblage are key to its affiliation with the Cache Creek terrane (e.g., Gabrielse 1998 ). The Kutcho assemblage is unconformably overlain by Upper Triassic limestone of the Sinwa Formation and clastic rocks of the Lower Jurassic Inklin Formation (Laberge Group), and this relationship has led...
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Includes: Supplemental Content
Journal Article

Latest Triassic–Early Jurassic Stikine–Yukon-Tanana terrane collision and the onset of accretion in the Canadian Cordillera: Insights from Hazelton Group detrital zircon provenance and arc–back-arc configuration

JoAnne L. Nelson, Bram van Straaten, Richard Friedman
Journal: Geosphere
Published: 08 February 2022
Geosphere (2022) 18 (2): 670–696.
DOI: https://doi.org/10.1130/GES02444.1
... (ca. 174 Ma, Ar-Ar closure in muscovite), and ca. 172 Ma crosscutting postkinematic plutons ( Mihalynuk et al., 1994 , 2004 ). In northern British Columbia, the southwest-vergent Nahlin and Big Salmon faults place imbricated Cache Creek assemblages and overlying Inklin Formation (Laberge Group...
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Journal Article

Petroleum source rock potential of Whitehorse trough: a frontier basin in south-central Yukon

Grant W. Lowey, Darrel G.F. Long, Martin. G. Fowler, Arthur. R. Sweet, Michael J. Orchard
Published: 01 September 2009
Bulletin of Canadian Petroleum Geology (2009) 57 (3): 350–386.
DOI: https://doi.org/10.2113/gscpgbull.57.3.350
... ). The Richthofen formation is characterized by graded siltstone to very fine-grained sandstone and mudstone couplets interpreted as thin-bedded turbidites. It is correlative with the Inklin Formation in the British Columbia portion of Whitehorse trough ( Souther, 1971 ). Also occurring in the Richthofen formation...
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Book Chapter

Chapter 10. Formal Taxonomic Framework

Author(s)
Marie-Pierre Aubry
Book: Coccolithophores: Cenozoic Discoasterales—Biology, Taxonomy, Stratigraphy
Series: SEPM Concepts in Sedimentology and Paleontology
Publisher: SEPM Society for Sedimentary Geology
Published: 01 January 2021
DOI: 10.2110/sepmcsp.14.329
EISBN: 978-1-56576-377-7
... for a calcareous nannofossil, this form being from the Shubuta Clay Member of the Upper Eocene Yazoo Formation of Mississippi. He assigned one species to the genus, Hayella situliformis . “As Hayella Gartner has the earlier publication date, it has priority over Hayella Roth, and the latter is both...
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