Results 191 to 200 of about 13,502 (252)

Search for impact ejecta at the Paleocene–Eocene boundary

Meteoritics &Planetary Science, EarlyView.
Abstract Almost 10 years have passed since microtektites and microkrystites were reported for the Paleocene–Eocene (P–E) boundary in drill cores and outcrop in New Jersey and in ODP Hole 1051B in the western North Atlantic. The glassy spherules were interpreted to reflect an impact trigger for the Paleocene–Eocene Thermal Maximum (PETM).
Birger Schmitz, Yue Cai, Shiyong Liao, Victoriano Pujalte, Ting Ruan, Robert P. Speijer, Ellen Thomas   +6 more
wiley   +1 more source

Machine learning-based method for determining regional parameters of the HSS model: a case study of Qingdao, China. [PDF]

Sci Rep
Yuan C, Zhang Q, Feng H, Wang K, Zhang S.   +4 more
europepmc   +1 more source

A geophysical investigation of the Roter Kamm impact crater, Namibia

Meteoritics &Planetary Science, EarlyView.
Abstract The Roter Kamm impact crater is located in the southern Namib Desert. The crater has a diameter of 2.5 km and belongs to the category of simple, bowl‐shaped impact craters, with an elevated rim of fractured target rock. The crater's interior is completely buried beneath sediments, preventing extensive surface investigations of the bedrock ...
Hannah Nienhaus, Pritam Yogeshwar, Wiebke Mörbe, Bülent Tezkan, Yajun Liu, Bufelo Lushetile, Martin Melles   +6 more
wiley   +1 more source

Volcanic forcing of global climate cooling at the Younger Dryas onset preserved in North American sediments. [PDF]

Sci Adv
Nana Yobo L, Brandon AD, O'Brien S, Halligan JJ, Waters MR.   +4 more
europepmc   +1 more source

Confirmation of the impact origin of the Late Ordovician Tvären impact structure (southeast Sweden) and emplacement of impactites in a marine setting

Meteoritics &Planetary Science, EarlyView.
Abstract The Tvären structure in southeastern Sweden has been listed as a confirmed marine‐target impact structure for decades. However, to date, no measurements and/or indexed data of planar deformation features in quartz grains from the structure have been published or any other unequivocal evidence of impact.
Katarzyna J. Gajewska, Sanna Alwmark, Mikael Calner, Sylvain Richoz, Jens Ormö, Erik Sturkell, Carl Alwmark   +6 more
wiley   +1 more source

Hongfu Yin: from defining the Golden Spike to shaping geobiology. [PDF]

Natl Sci Rev
Zhao W, Xie S.
europepmc   +1 more source

Confirming the impact origin of the São Miguel do Tapuio structure, northeastern Brazil

Meteoritics &Planetary Science, EarlyView.
Abstract The São Miguel do Tapuio structure (SMT) is a remarkable, nearcircular feature of about 21 km diameter, centered at 5°37.6′ S, 41°23.3′ W in Piauí state, northeastern Brazil. The structure is located within the sedimentary strata of the Paleozoic–Mesozoic Parnaíba Basin and predominantly comprises sandstones of the Devonian Pimenteiras and ...
Alvaro Penteado Crósta, Neivaldo Araújo de Castro, Marcos Alberto Rodrigues Vasconcelos, Airton Natanael Coelho Dias, Ludovic Ferrière, Wolf Uwe Reimold, Ana Maria Góes, Jackson Alves Martins, Liliana Sayuri Osako, Raimundo Mariano Gomes Castelo Branco   +9 more
wiley   +1 more source

Melt-bearing nodules from Tenerife reveal magma reservoir diversity prior to caldera-forming eruptions. [PDF]

Contrib Mineral Petrol
Horn EL, Taylor RN, Gernon TM, Stock MJ, Schofield KE, Brown RJ, Smith VC, McLean D.   +7 more
europepmc   +1 more source

Convergent Evolution in Amblyopsid Cavefishes and the Age of Eastern North American Subterranean Ecosystems. [PDF]

Mol Biol Evol
Brownstein CD, Policarpo M, Harrington RC, Hoffman EA, Stokes MF, Casane D, Near TJ.   +6 more
europepmc   +1 more source

Problems in Japanese archaeoparasitology: Analysis of paleo-parasitic eggs from Hachinohe Castle. [PDF]

Parasites Hosts Dis
Fujita H, Funaba M, Fujisawa SO.
europepmc   +1 more source