Results 101 to 110 of about 58,521 (270)
Geology, 1988 Two components of magnetization were isolated in the Silurian-Devonian Andreas redbeds of the central Appalachians of Pennsylvania (lat 40.75 degrees N, long 75.78 degrees W): a thermally distributed, synfolding B component, and a thermally discrete, pre-Alleghenian-age folding C component.
Miller, John D., Kent, Dennis V.
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GeoresursyA brief description of the geological structure of the sedimentary cover within the Kempendyai depression is given, in which two intervals of formation of unstable layers in the Cambrian and Devonian are distinguished, and their salt saturation is ...
B. V. Lunev +3 more
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Cone-in-cone: how it occurs in the Devonian; Series in Pennsylvania (U.S.A.); with Further Details of its Structure, Varieties, etc. [PDF]
, 1894 W. S. Gresley
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On the Devonian age of the World [PDF]
The GeologistThe rooks composing the earth's crust contain a history and represent time—a history of changes numerous, varied, and important: changes in the distribution of land and water; in the thermal conditions of the world; and in the character of the organic tribes which have successively peopled it.
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Rapid Communications in Mass Spectrometry, Volume 39, Issue 16, 30 August 2025.ABSTRACT Rationale We describe a new simplified sample preparation technique, based on dual chromatography for the analysis of 87Sr/86Sr in liquid agri‐food samples. We applied this approach for authenticating the origin of maple syrup products in Quebec, characterizing the 87Sr/86Sr of soil profiles from geologically distinct maple groves, including ...
B. Saar de Almeida +4 more
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XXXIV.—On a new genus of Devonian corals, with descriptions of some species of the same [PDF]
, 1886 H. Alleyne Nicholson, Arthur H. Foord
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Journal of Metamorphic Geology, Volume 43, Issue 6, Page 613-640, August 2025.ABSTRACT A garnet population from the lower Kalak Nappe Complex in Finnmark (Arctic Norway) was characterized using high‐resolution X‐ray micro‐computed tomography, electron probe micro‐analysis and laser ablation inductively coupled plasma mass spectrometry mapping to assess the extent of compositional equilibration and the controlling crystallization
M. T. A. G. Yogi +3 more
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The Siluro—Devonian Boundary [PDF]
Geological Magazine, 1969 Redefinition of Silurian-Devonian boundary at the base of the Monograptus uniformis zone not to be accepted in England until ratified by International Geological ...
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Additions to the Middle Devonian and Carboniferous corals in the Australian Museum [PDF]
, 1902 R. Etheridge
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Unexpected pathway for intercontinental movement into the Nearctic revealed by phylogenetic analyses
Zoologica Scripta, Volume 54, Issue 4, Page 562-574, July 2025.Abstract Much of North America's freshwater biodiversity is derived from Palearctic lineages. Isopods of the Holarctic family Asellidae are among the most widespread and diverse freshwater crustaceans, but Nearctic species are poorly studied. We examined the evolutionary history of the family, utilizing Sanger sequencing of mitochondrial and nuclear ...
Kye Tomoyasu +2 more
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