Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Robert L. Ripperdan"'
Publikováno v:
Geological Magazine. 159:173-176
No basis for controversy exists in the naming of a global, strongly negative, uppermost Cambrian carbon isotope (δ13C) excursion. The HERB Event (HERB) has met the standards for chemostratigraphic units (i.e. consistent biostratigraphic brackets, co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a3c25a99728b1f138809f67cd148c62
https://doi.org/10.1017/s001675682100090x
https://doi.org/10.1017/s001675682100090x
Autor:
Rebecca L. Freeman, Zachary C. Tolbart, Kevin R. Evans, James D. Loch, John F. Taylor, Robert L. Ripperdan, James F. Miller
Publikováno v:
Annales de Paléontologie. 101:199-211
The lowest occurrence of the conodont Eoconodontus notchpeakensis (Miller, 1969) has been proposed as the base of Cambrian Stage 10. The horizon is recognized in three sections in the House Range, western Utah, USA in the lower part of the Red Tops M
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::790f4d7547a413965d4a671c41cc5625
https://doi.org/10.1016/j.annpal.2015.04.008
https://doi.org/10.1016/j.annpal.2015.04.008
Publikováno v:
Palaeogeography, Palaeoclimatology, Palaeoecology. 409:135-144
The Green Point Formation of the Cow Head Group in western Newfoundland (Canada) represents the Global Stratotype Section and Point (GSSP) for the Cambrian–Ordovician boundary on Laurentia. The formation consists of the Martin Point (lower) and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7ab2c7efe05f92e2eab1083169b1d7b9
https://doi.org/10.1016/j.palaeo.2014.05.010
https://doi.org/10.1016/j.palaeo.2014.05.010
Publikováno v:
GFF. 136:189-192
The Stage 10 Working Group of the International Subcommission on Cambrian Stratigraphy is tasked with recommending a stratotype section and horizon for the base of Stage 10, the uppermost stage of the Cambrian System. We identify three sections in th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f87fed5d66a78cdc44760a55c9480316
https://doi.org/10.1080/11035897.2013.862853
https://doi.org/10.1080/11035897.2013.862853
Publikováno v:
International Journal of Remote Sensing. 34:6539-6561
This study presents an integrated approach for the identification of groundwater occurrences in shallow fracture zone SFZ aquifers using remote-sensing, geological, and geophysical data. The Central Eastern Desert of Egypt was selected as a test site
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5daf0e6ae027d16db1225189e3530185
https://doi.org/10.1080/01431161.2013.804221
https://doi.org/10.1080/01431161.2013.804221
Autor:
Richard A. Robison, Bruce Runnegar, Robert L. Ripperdan, W.T. Chang, Shanchi Peng, Martin D. Brasier, E.K. Ergaliev, Matthew R. Saltzman, Kyger C. Lohmann
The Steptoean positive carbon isotope excursion (SPICE) marks a global oceanographic event that confirms intercontinental correlations between different biogeographic realms based on agnostids and other blue-water trilobites. The SPICE excursion is d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d53f3b2a0ce74e001a4311afd17f652
https://ora.ox.ac.uk/objects/uuid:2d120c6a-da05-4839-b85b-890428959e44
https://ora.ox.ac.uk/objects/uuid:2d120c6a-da05-4839-b85b-890428959e44
Publikováno v:
Journal of African Earth Sciences. 69:13-25
This study presents a model budget for groundwater in the Central Eastern Desert of Egypt. The stable isotopic composition and hydrochemistry of groundwater samples collected from different aquifers were determined to identify recharge sources and wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3dfb0040e8cc64f15ed427528dda3a2d
https://doi.org/10.1016/j.jafrearsci.2012.04.002
https://doi.org/10.1016/j.jafrearsci.2012.04.002
Publikováno v:
Journal of Sedimentary Research. 82:216-231
High-resolution sedimentological and biostratigraphic data recently recovered from Upper Cambrian strata in the northern Rocky Mountain and central Appalachian regions reveal that meter-scale cycles of very different character developed synchronously
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b87fe27f2bbe737c1d8551b33b46669f
https://doi.org/10.2110/jsr.2012.20
https://doi.org/10.2110/jsr.2012.20
Publikováno v:
International Journal of Geosciences. :133-152
This paper presents a robust kinematic model that describes northern Red Sea and Gulf of Suez rifting and the development of marginal extensional half-graben sub-basins (ESB). A combination of Landsat Enhanced Thematic Mapper Plus (ETM+) and structur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6b80cfa905e4d5d643467fecc091254
https://doi.org/10.4236/ijg.2012.31016
https://doi.org/10.4236/ijg.2012.31016
Autor:
Charles A. Sandberg, Justin V. Strauss, Jessica R. Creveling, Karri R. Sicard, Sven Hartenfels, Robert L. Ripperdan, Paul M. Myrow
Publikováno v:
Palaeogeography, Palaeoclimatology, Palaeoecology. 306:147-159
New carbon isotopic data from upper Famennian deposits in the western United States reveal two previously unrecognized major positive isotopic excursions. The first is an abrupt ~ 3‰ positive excursion, herein referred to as ALFIE (A Late Famennian
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::29a171ce3a59b6c8b0d3769a688dba26
https://doi.org/10.1016/j.palaeo.2011.04.013
https://doi.org/10.1016/j.palaeo.2011.04.013