Results 161 to 170 of about 82,273 (326)

Microspherules Formed by Lightning Strikes

Meteoritics &Planetary Science, EarlyView.
Abstract Natural microspherules are formed by high‐temperature processes and are present throughout the geologic record to the present day. We report the discovery of large numbers of microspherules recovered from a rock pavement in the Pilbara region, Western Australia.
M. R. Boyd, M. J. Genge, A. G. Tomkins
wiley   +1 more source

Highly enriched carbon and oxygen isotopes in carbonate-derived CO ₂ at Gale crater, Mars [PDF]

David G. Burtt, J. C. Stern, Christopher R. Webster, Amy E. Hofmann, H. B. Franz, B. Sutter, M. T. Thorpe, Edwin S. Kite, J. L. Eigenbrode, Alexander A. Pavlov, Christopher H. House, Benjamin M. Tutolo, David J. Des Marais, E. B. Rampe, A. C. McAdam, C. A. Malespin   +15 more
openalex   +1 more source

Measurements of fecal cortisol metabolites (fGMC) and activity budget of male spotted hyenas in the Ngorongoro Crater (Tanzania)

, 2020
Eve Davidian, Bettina Wachter, Ilja Heckmann, Martin Dehnhard, Heribert Hofer, Oliver P. Höner   +5 more
openalex   +1 more source

Microbial Endolithic Community at Meteor Crater

Meteoritics &Planetary Science, EarlyView.
Abstract Postimpact recovery and evolution in response to climate changes produced a modern ecosystem at Meteor Crater dominated by a grassland and woodland of piñon and juniper, which has been used to evaluate floral and megafaunal consequences of impact cratering during the Phanerozoic Eon of complex life.
David A. Kring, Charles S. Cockell
wiley   +1 more source

3D Modeling of Lacus Mortis Pit Crater with Presumed Interior Tube Structure

, 2015
Ik‐Seon Hong, Yu Yi, Jaehyung Yu, J. Haruyama   +3 more
openalex   +2 more sources

Paleocene–Eocene palynomorphs from the Chicxulub impact crater, Mexico. Part 2: angiosperm pollen

, 2020
Vann Smith, Sophie Warny, David M. Jarzen, Thomas D. Demchuk, Vivi Vajda, S. P. S. Gulick   +5 more
openalex   +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

Correction to “Small rampart craters in an equatorial region on Mars: Implications for near‐surface water or ice” [PDF]

, 2005
D. Reiss, Ernst Hauber, G. Michael, R. Jaumann, G. Neukum   +4 more
openalex   +1 more source

Increased small impactor flux on the Moon as inferred from regolith thickness at the Chang'E-5 Region. [PDF]

Nat Commun
Zhang M, Jia B, Eke VR, Fa W.
europepmc   +1 more source

Etiology, pathogenesis and treatment of peri‐implantitis: A European perspective

Periodontology 2000, EarlyView.
Abstract Peri‐implantitis is a plaque‐associated pathological condition occurring in tissues around dental implants. It is characterized by inflammation in the peri‐implant mucosa and progressive loss of supporting bone. Over the last 30 years, peri‐implantitis has become a major disease burden in dentistry.
Tord Berglundh, Andrea Mombelli, Frank Schwarz, Jan Derks   +3 more
wiley   +1 more source