Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Spencer J. Cotkin"'
Publikováno v:
Journal of Geosciences. :81-103
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92fe3d5501ccc5e6a2dd3968d996e9ef
https://doi.org/10.3190/jgeosci.285
https://doi.org/10.3190/jgeosci.285
Autor:
Spencer J. Cotkin, Alfred E. Dittert, Daniel T. Kremser, Christopher Carr, Mary Louise Cotkin
Publikováno v:
American Antiquity. 64:316-342
Petrographic analyses were made of 386 utilitarian pottery vessels from 23 dated components of 18 Early Woodland through early Fort Ancient period sites (ca. 1150 B.C.–A.D. 1300) in south-central Ohio. The analyses reveal that a significant percent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::095366d02c9a831d3bd138df90768937
https://doi.org/10.2307/2694282
https://doi.org/10.2307/2694282
Autor:
Spencer J. Cotkin
Publikováno v:
Lithos. 40:1-30
The Seljeneset Meta-anorthosite consists of deformed and metamorphosed anorthosite and mafic rocks, is situated in the high-grade Western Gneiss Region (WGR) of Norway, and is adjacent to the 1.52 Ga Flatraket quartz monzonite (mangerite). The WGR wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d914bb6a7cd9cbbb6a90b181548e853c
https://doi.org/10.1016/s0024-4937(96)00023-0
https://doi.org/10.1016/s0024-4937(96)00023-0
Autor:
L. Gordon Medaris, Spencer J. Cotkin
Publikováno v:
Journal of Petrology. 34:543-571
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91b56b0d6d136e1bdd42410e60ef4b32
https://doi.org/10.1093/petrology/34.3.543
https://doi.org/10.1093/petrology/34.3.543
Publikováno v:
The Journal of Geology. 100:323-338
Late Ordovician blueschist from the schist of Skookum Gulch, eastern Klamath Mountains, California, is the oldest known blueschist in California and one of the oldest in North America. Lawsonite-bearing glaucophane schist occurs as lenses intimately
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f6a824b8d9bbc70a269231f753527d3
https://doi.org/10.1086/629635
https://doi.org/10.1086/629635
Autor:
Spencer J. Cotkin
Publikováno v:
Geology. 20:821
Middle Ordovician to Early Silurian volcanism, plutonism, metamorphism, deformation, and sedimentation in the Yreka and Trinity terranes, eastern Klamath Mountains, northern California, are considered to be related phenomena that occurred in response
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a6c62402b741839cfec0eb6bf7d6141c
https://doi.org/10.1130/0091-7613(1992)020<0821:ostinc>2.3.co
https://doi.org/10.1130/0091-7613(1992)020<0821:ostinc>2.3.co
Publikováno v:
Lithos. 21:117-128
The Western Gneiss Region of Norway contains relics of eclogite and high-pressure granulite that have been extensively overprinted by amphibolite-facies assemblages. A meta-anorthosite from Seljeneset. Nordfjord, contains fine-grained margarite+quart
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c062af90c2f2e88156515e77a3afa769
https://doi.org/10.1016/0024-4937(88)90015-1
https://doi.org/10.1016/0024-4937(88)90015-1
Autor:
Spencer J. Cotkin
Publikováno v:
Contributions to Mineralogy and Petrology. 96:192-200
The Late Ordovician schist of Skookum Gulch, northern California, is one of only a few pre-Mesozoic blueschist localities in North America. Among these, the Skookum Gulch occurrence is noteworthy because it contains lawsonite and has had a relatively
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db2d8a9b768946f10050d1cd1943bfe1
https://doi.org/10.1007/bf00375233
https://doi.org/10.1007/bf00375233