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Hasen Creek Formation

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(A) Unconformable contact between Permian <b>Hasen</b> <b>Creek</b> <b>Formation</b> of Wrangell...
Published: 01 August 2014
Figure 3. (A) Unconformable contact between Permian Hasen Creek Formation of Wrangellia and Devonian gabbro of the Steele Creek complex, southwest Yukon. (B) Intrusive relationship between Devonian gabbro of the Mount Constantine complex and Silurian to Devonian Bullion Creek limestone, Alexander
Series: GSA Field Guide
Published: 10 December 2018
DOI: 10.1130/2018.0051(04)
EISBN: 9780813756516
... Creek Formation rests conformably on the Borden Group and is dominantly fine-grained dolostone and limestone with locally abundant echinoderm and bryozoan fragments ( Rexroad, 1986 ). Chert intervals are common with minor siltstone and shale ( Rexroad, 1986 ). The overlying Harrodsburg Limestone...
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Journal Article
Journal: AAPG Bulletin
Published: 01 November 2010
AAPG Bulletin (2010) 94 (11): 1713-1740.
... was assessed using stable isotope geochemistry. Measured and modeled vitrinite reflectance values were compared. Depth of burial and formation water salinity dictated different dominant origins of the gas in place in the two locations studied in detail. The shallower Owen County location (415–433 m [1362–1421...
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Series: GSA Special Papers
Published: 01 January 2007
DOI: 10.1130/2007.2431(24)
... ). These are conformably overlain by Permian limestone and argillite (Eagle Creek and Hasen Creek Formations) and argillite containing diagnostic Middle Triassic (Ladinian) species of Daonella. The Nikolai Greenstone in the Wrangell Mountains is disconformably overlain by Late Triassic to Early Jurassic shallow...
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Photographs of the base of the Nikolai <b>Formation</b> in the Alaska Range and Wr...
in > Geosphere
Published: 01 February 2010
Chitistone Limestone (taken by Ed MacKevett, Jr.). Several faults offset the contact. (C) Paleozoic arc rocks and marine sedimentary sequences underlying Nikolai basalts. Photograph by Ed MacKevett, Jr. (Phc—Hasen Creek Formation; Pgh—Golden Horn Limestone Lentil; TRd—Middle Triassic Daonella beds). (D
Series: GSA Special Papers
Published: 01 January 2007
DOI: 10.1130/2007.2431(06)
... volcanic breccias, flows, and volcaniclastic rocks, mainly andesite and dacite, and associated marine sedimentary rock (Tetelna Volcanics, and Station Creek and Slana Spur Formations); (2) Permian limestone, pelitic rock, and chert (Hasen Creek and Eagle Creek Formations); (3) Triassic (Ladinian) black...
Journal Article
Journal: Geosphere
Published: 01 February 2010
Geosphere (2010) 6 (1): 47-73.
... Chitistone Limestone (taken by Ed MacKevett, Jr.). Several faults offset the contact. (C) Paleozoic arc rocks and marine sedimentary sequences underlying Nikolai basalts. Photograph by Ed MacKevett, Jr. (Phc—Hasen Creek Formation; Pgh—Golden Horn Limestone Lentil; TRd—Middle Triassic Daonella beds). (D...
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Journal Article
Published: 01 September 2008
Journal of Paleontology (2008) 82 (5): 1043-1050.
... to one-half corallite radius; dissepiments globose, interseptal, in two or three rows. One corallum with 3 transverse and 2 longitudinal sections. SJS 1286, USGS loc. 7110A-PC, Hasen Creek Formation, Skolai district. The present species is similar to P. gracilis but differs...
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Journal Article
Journal: Lithosphere
Published: 01 August 2014
Lithosphere (2014) 6 (4): 270-276.
...Figure 3. (A) Unconformable contact between Permian Hasen Creek Formation of Wrangellia and Devonian gabbro of the Steele Creek complex, southwest Yukon. (B) Intrusive relationship between Devonian gabbro of the Mount Constantine complex and Silurian to Devonian Bullion Creek limestone, Alexander...
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Journal Article
Published: 06 October 2016
Canadian Journal of Earth Sciences (2017) 54 (3): 322-344.
... volcanic and volcaniclastic rocks of the Station Creek Formation gradationally overlain by Permian sedimentary rocks of the Hasen Creek Formation ( Smith and MacKevett 1970 ; Read and Monger 1976 ; Israel et al. 2007 ; Israel and Cobbett 2008 ). The Skolai Group is unconformably overlain by Upper...
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Journal Article
Journal: GSA Bulletin
Published: 01 November 2014
GSA Bulletin (2014) 126 (11-12): 1531-1550.
... Formation and overlying Lower Permian shallow-marine strata of the Hasen Creek Formation ( Fig. 2 ; Smith and MacKevett, 1970 ; MacKevett, 1971 ; Read and Monger, 1976 ). The exposed base of the Station Creek Formation in Yukon consists of early Mississippian crystal-rich tuffs dated at 352.84 ± 0.30 Ma...
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Journal Article
Published: 01 April 2002
The Canadian Mineralogist (2002) 40 (2): 651-669.
... and the Permian sedimentary rocks and limestone of the Hasen Creek Formation. The Wellgreen sill is about 5 km long; it is located in the thickest part of the complex and consists of dunite, wehrlite, clinopyroxenite, olivine clinopyroxenite, gabbro, and massive sulfides ( Hulbert et al. 1988 , Miller 1991...
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Series: Special Publications of the Society of Economic Geologists
Published: 01 January 2013
DOI: 10.5382/SP.17.03
EISBN: 9781629491639
... closing of Iapetus ocean. Their rapid subsequent detachment (ca. 360-345 Ma) was probably because of slab rollback, in a process comparable to the late Oligocene to present opening of the Japan Sea ( Jolivet et al., 1995 ), with concurrent formation of the Kuroko and younger VMS, as well as currently...
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Journal Article
Published: 01 February 2012
Italian Journal of Geosciences (2012) 131 (1): 47-66.
... downwind, sand tails, bars, and beaches. The drowned riverine net is represented today by several coastal channels and creeks, which terminate inland in a vast and flat swampy area at the border between Somalia and Kenya. This area contributes only in the rainy periods to the channels. In these periods...
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Series: NRC Monograph Publishing Program
Published: 01 January 2007
EISBN: 9780660196657
... specimens having a well-developed dissepimentarium and an axial structure. The main features distinguishing these two groups are as follows: the formation in the Diphyphyllinae of a lithostrotionid axial structure as an extension of the counter septum, rather than by union of the axial margins of several...
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