Results 81 to 90 of about 60,314 (301)

Leonardo da Vinci (1452-1519) and the birth of stratigraphy [PDF]

open access: yes, 2020
Most geological handbooks attribute the birth of stratigraphy to William Smith in the 19th century, after a brief mention of the pioneering contribution of Niels Stensen (Nicholaus Stenonis) who, almost a century before, had introduced in his ...
A. Ferretti   +8 more
core   +1 more source

Fantosmium, a New Genus of Onthophilinae From Mid‐Cretaceous Kachin Amber (Coleoptera: Histeridae)

open access: yesEcology and Evolution
We describe and illustrate Fantosmium qizhihaoi gen. et sp. nov., a new histerid beetle from mid‐Cretaceous Kachin amber, and evaluate its phylogenetic position based on morphological characters.
Yan‐Da Li   +2 more
doaj   +1 more source

Thermochronologic Constraints on the Extensional History of the Ibex Hills, Southeastern Black Mountains, Death Valley, California

open access: yesGeological Journal, EarlyView.
A. Modeled T‐t paths for samples in the northern Ibex Hills, showing steady cooling throughout much of the Cenozoic, until rapid Miocene cooling. B. Weighted mean paths for each sample in this study. Note that all show a rapid cooling event at or just after 10 Ma, which is interpreted to represent exhumation as a result of regional extenstion ...
Zachariah D. Fleming
wiley   +1 more source

Geology of the Upper Cretaceous and part of the lower tertiary between the Rio Aragon subordan and the Rio Gallego (Spanish Pyrenees, province of Huesca) [PDF]

open access: yes, 1968
This study deals with the stratigraphy sis forms part of the geological investigations and the tectonics of the Upper Cretaceous gations and part of the Lower Tertiary between Pyrenees, under the Rio Aragon Subordan (western boundary) and the Rio ...
Stratigraphy & paleontology   +2 more
core  

Stratigraphy and chronology of a 15ka sequence of multi-sourced silicic tephras in a montane peat bog, eastern North Island, New Zealand. [PDF]

open access: yes, 1999
We document the stratigraphy, composition, and chronology of a succession of 16 distal, silicic tephra layers interbedded with lateglacial and Holocene peats and muds up to c. 15 000 radiocarbon years (c.
Lowe, David J.   +5 more
core   +1 more source

Late Ordovician cephalopods from Morocco and their implications

open access: yesSwiss Journal of Palaeontology
The present paper describes the latest cephalopod fauna from the Upper Ordovician in the Anti-Atlas region, Morocco. Two species are reported herein belonging to two genera including one new species, Tafadnatoceras elfechtense sp. nov.
Xiang Fang   +12 more
doaj   +1 more source

A Fossil of the Austral Tree Fern Genus Lophosoria (Dicksoniaceae) from Mid-Cretaceous Myanmar Amber

open access: yesBiology and Life Sciences Forum
A new tree fern species, Lophosoria myanmarica sp. nov. (Dicksoniaceae, Cyatheales), is described from mid-Cretaceous Myanmar amber. The fossil preserves a fertile lamina segment with well-defined sori, sporangia, paraphyses, and in situ trilete spores ...
Chunxiang Li   +3 more
doaj   +1 more source

Notable Impact of Paleotectonic Stress on Gold Mineralisation in the West Qinling Orogen

open access: yesGeological Journal, EarlyView.
By applying fuzzy clustering and multiple inverse methods, we systematically processed the data of vein and fault slip in this ore deposit to reveal the transition of orogenic geological environment and paleotectonic stress field. Our research results show two different stress states: the northwest–southeast extensional stress field and the northeast ...
Hongyan Wang   +3 more
wiley   +1 more source

Gerce, Hungary - Tapolca basalt formation (a) and pula alginite formation [PDF]

open access: yes, 2005
Excursion A of the 12th Congress of the Regional Committee on Mediterranean Neogene Stratigraphy, Vienna ...
Martin, Ulrike   +2 more
core  

The Energy Dilemma: Does Energy Security Risk and Renewable Energy Affect Fossil Material Footprint? Policy Framework for Securing SDGs

open access: yesGeological Journal, EarlyView.
Energy security risk has a positive impact on material footprint. Renewable energy consumption reduces material footprint. ABSTRACT Following a high economic growth path, the group of G7 economies is found to be utilising more and more material, causing a material footprint (MF), which in turn contributes to pollution.
Serhat Çamkaya   +4 more
wiley   +1 more source

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