RESULTS FOR Koessen Beds
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Results shown limited to content with bounding coordinates.
Towards accurate numerical calibration of the Late Triassic: High-precision U-Pb geochronology constraints on the duration of the Rhaetian
Jörn-Frederik Wotzlaw, Jean Guex, Annachiara Bartolini, Yves Gallet, Leopold Krystyn, Christopher A. McRoberts, David Taylor, Blair Schoene, Urs Schaltegger
Publisher: Geological Society of America
Published: 01 July 2014
Geology (2014) 42 (7): 571-574.
... importance for assessing mechanisms of environmental perturbations and associated biologic consequences preceding the end-Triassic mass extinction. Here we report new chemical abrasion–isotope dilution–thermal ionization mass spectrometry zircon U-Pb dates for volcanic ash beds within the Aramachay Formation...
Sedimentological, palynological and geochemical studies of the terrestrial Triassic–Jurassic boundary in northwestern Poland
Journal: Geological Magazine
Publisher: Cambridge University Press
Published: 12 September 2011
Geological Magazine (2011) 149 (2): 308-332.
... at the top of Koessen Fm (Hillebrandt et al . 2007 ) and in Csövár (Pálfy et al . 2001 , 2007 ). Lithologically these beds comprise grey sandstone and mudstone with coalified rootlets. Carbonate concretions are replaced by sideritic ones, and their oxidization is responsible for red staining...
Publisher: AASP -The Palynological Society
Published: 02 January 2019
Palynology (2019) 43 (1): 104-150.
... of the dinocyst group Scriniodinium–Endoscrinium–Athigmatocysta and description of the new species Scriniodinium multistratum sp. nov. from the Jurassic‒Cretaceous boundary beds of Northern Siberia. Paleontological Journal , 51(2): 214–222 (doi: 10.1134...
Journal: Journal of Paleontology
Publisher: Paleontological Society
Published: 01 January 2006
Journal of Paleontology (2006) 80 (1): 104-120.
... and ornament. In Southeast Asia, Healey (1908) illustrated P . cf. P. blanfordi ( Böttger, 1880 ) as a Rhaetian form in the Napeng beds of Myanmar; however, the Southeast Asian form has much stronger radial ribs. Genus Pteria Scopoli, 1777 Gervilleia angusta ( Münster ). Bittner , 1895...
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