Results 61 to 70 of about 4,347 (218)

Vertical profiling of shock attenuation at the Rochechouart impact structure, France

Meteoritics &Planetary Science, EarlyView.
Abstract Rochechouart, south‐west France, is a complex impact structure. Here, we present the first report of shock barometry of quartz from what are likely parautochthonous basement units at depth, based on samples from the 2017 C.I.R.I.R drilling campaign. The crystallographic orientations of 725 sets of PDFs in 512 quartz grains in samples from four
P. Struzynska, S. Alwmark, C. Alwmark, M. H. Poelchau, P. Lambert   +4 more
wiley   +1 more source

Life in extraterrestrial environments Quarterly status report, 31 May - 31 Aug. 1967

, 1967
Life studies of simulated extraterrestrial ...

core  

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

Life in extraterrestrial environments Quarterly status report, Feb. 15 - May 31, 1967

, 1967
Ecological experiments on bacteria growth response and survival in different soils simulating extraterrestrial ...

core  

Extraterrestrial soils [PDF]

, 2011
Extraterrestrial soils may be defined as any of the solid granular crustal features of planets and moon other than those soils on planet Earth. Despite four decades of space exploration, which greatly expanded our understanding of the Solar System, there
SCALENGHE, Riccardo, certini g.
core  

A Study of the Current and Ongoing Search for Biosignatures of Extraterrestrial Life in the Universe

, 2021
The current search for extraterrestrial life hinges on the detection of biosignatures, which are any potential marker found that might indicate the presence of biological processes of life.
Reeves, Allen E
core  

Extraction of polar and nonpolar biomarkers from the martian soil using aqueous surfactant solutions [PDF]

, 2012
The Life Marker Chip intends to use an aqueous surfactant solution to extract both polar AND nonpolar biomarkers from the martian soil for transport to an antibody-based detection system. Currently, a solution of 1.5 g l-1 polysorbate 80 in 20:80 (vol:
Court, Richard W., Sims, Mark R., Cullen, David C., Rix, Catherine S., Sephton, Mark A.   +4 more
core   +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

Distribution of extraterrestrial chromite in Middle Ordovician Komstad Limestone in the Killeröd Quarry, southern Sweden

, 2007
Sediment-dispersed extraterrestrial chromite grains (63-355 mu m) have been recovered in a section across the Arenig-Llanvirn transition in the Killerod quarry in southeastern Scania.
Häggström, T., Schmitz, Birger
core   +1 more source

Life in Extraterrestrial Environments Quarterly Status Report, Aug. 15 - Nov. 15, 1966

, 1966
Extraterrestrial life in simulated Martian environment, and effects of barometric pressure and carbon ...
Hagen, C. A.
core