Zobrazeno 1 - 10
of 70
pro vyhledávání: '"Brian J Witzke"'
Autor:
Brian J. Witzke, Matthew Braun, Gwen Barnes, Alyssa M. Bancroft, Ryan Clark, Brittany M. Stolfus, Bradley D. Cramer, Madysen H. Gilbert, James E. Day, Nicholas J. Hogancamp, Stephanie Tassier-Surine, Megan N. Heath
Publikováno v:
Geological Society of America Abstracts with Programs.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a9e364ef52d0a35e3b89aef7052bad06
https://doi.org/10.1130/abs/2021am-369610
https://doi.org/10.1130/abs/2021am-369610
Publikováno v:
Journal of the Geological Society. 175:865-874
The Winneshiek Shale (Middle Ordovician, Darriwilian) was deposited in a meteorite crater, the Decorah impact structure, in NE Iowa. This crater is 5.6 km in diameter and penetrates Cambrian and Ordovician cratonic strata. It was probably situated cl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f506457ae9e5db875d5a6946570d5bff
https://doi.org/10.1144/jgs2018-101
https://doi.org/10.1144/jgs2018-101
Publikováno v:
GSA Bulletin. 130:2062-2086
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bfaabb7939fdad45eafb6a3e7d792017
https://doi.org/10.1130/b31925.1
https://doi.org/10.1130/b31925.1
Autor:
Shuhai Xiao, Brian J. Witzke, A.D. Muscente, Huaibao Liu, Andrew D. Hawkins, Robert M. McKay, Derek E. G. Briggs
Publikováno v:
PALAIOS. 33:1-15
The Winneshiek Lagerstatte occurs within an Ordovician meteorite impact structure beneath part of the city of Decorah, Iowa. The Lagerstatte has yielded an atypical marine fauna including phyllocarid crustaceans, eurypterids, conodonts, linguloid bra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b10fa4c998f4a13d97d1a625964a756
https://doi.org/10.2110/palo.2017.053
https://doi.org/10.2110/palo.2017.053
Autor:
Stephanie Tassier-Surine, James E. Day, Brian J. Witzke, Bruce A. Barnett, Nicholas J. Hogancamp, Bradley D. Cramer, Gwen Barnes, Ryan Clark, Brittany M. Stolfus, Megan N. Heath
Publikováno v:
Palaeogeography, Palaeoclimatology, Palaeoecology. 577:110540
New high-resolution organic (δ13Corg) and carbonate (δ13Ccarb) carbon isotope data from middle shelf deposits in southeastern Iowa demonstrate decoupled signals during the onset of the Hangenberg Event and across the Devonian-Carboniferous Boundary
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65879f6688106479c77fba1bb63e8745
https://doi.org/10.1016/j.palaeo.2021.110540
https://doi.org/10.1016/j.palaeo.2021.110540
Publikováno v:
Newsletters on Stratigraphy. 50:391-416
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bcce2f0d314b1253a3126aa3e8ee9f40
https://doi.org/10.1127/nos/2017/0375
https://doi.org/10.1127/nos/2017/0375
Autor:
Brian J. Witzke, David R. Cordie
Publikováno v:
Paleontological Research. 21:7-13
This study describes a new genus of melocrinitid crinoid from the Middle Devonian, Givetian Stage, of Iowa (subclass Camerata, family Melocrinitidae). The specimen described is assigned to Ronsocrinus gen. nov. within the family Melocrinitidae. Ronso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5bfc966d5f2bb5214e7977cde28a986d
https://doi.org/10.2517/2016pr014
https://doi.org/10.2517/2016pr014
Autor:
Brian J. Witzke, Maya Elrick
Publikováno v:
Palaeogeography, Palaeoclimatology, Palaeoecology. 445:50-59
Results from previous paleoclimate studies indicate Gondwanan glaciation, marking the onset of middle Paleozoic icehouse climate conditions, began by the Latest Devonian (Famennian). More recently, δ18O trends from conodont apatite suggest cooling M
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb0689f506b30e6012254415e41ab5f7
https://doi.org/10.1016/j.palaeo.2015.12.019
https://doi.org/10.1016/j.palaeo.2015.12.019
Publikováno v:
Journal of Paleontology. 89:991-1006
The Middle Ordovician (Darriwilian) Winneshiek Lagerstätte of northeast Iowa is preserved in a meteorite crater. Besides conodonts, the fossils are dominated by arthropods, particularly eurypterids and phyllocarids. Here we describe the bivalved for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4cd5536d01a0ed49217f2106fe30d07
https://doi.org/10.1017/jpa.2015.76
https://doi.org/10.1017/jpa.2015.76
Autor:
Philip H. Heckel, Brian J. Witzke
Publikováno v:
Geological Society of America Abstracts with Programs.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e07613b0d7e726b4a4384c72d4d41b7
https://doi.org/10.1130/abs/2018nc-312037
https://doi.org/10.1130/abs/2018nc-312037