Results 61 to 70 of about 13,405 (212)

Ichnological insights into deoxygenation across the Cenomanian–Turonian Boundary Oceanic Anoxic Event 2 in the northern extent of Western Interior Seaway (west‐central Alberta)

Sedimentology, Volume 73, Issue 2, Page 355-390, February 2026.
ABSTRACT In‐depth ichnological and sedimentological analyses of the Cenomanian–Turonian boundary Oceanic Anoxic Event (OAE2) from the Western Interior Seaway of west‐central Alberta reveal a persistent physico‐chemically stressed setting. The interval is characterised by a dominantly diminutive and diminished ichnological assemblage, with familiar ...
Sara K. Biddle, Murray K. Gingras
wiley   +1 more source

Hydrous Chondrites under Shock

The Astrophysical Journal
We examine the shock response of a chondrule-like multicomponent silicate melt enriched with 2 wt% H _2 O, representative of hydrous chondrites, using ab initio molecular dynamics.
Adrien Saurety, Razvan Caracas
doaj   +1 more source

Expanding the Ichnofacies Model to Tidal Straits: Testing Predictions and Assessing Anomalies

Terra Nova, Volume 38, Issue 1, Page 19-26, February 2026.
ABSTRACT Trace fossils are instrumental in facies analysis, but some depositional environments remain underexplored. Cenozoic deposits in Italy have been studied to evaluate the ichnology of tidal straits. These comprise four zones: (1) strait centre, (2) dune‐bedded strait zone, (3) strait end and (4) strait margin.
Luis A. Buatois, M. Gabriela Mángano, Valentina M. Rossi, Sergio G. Longhitano, Julio Leva Lopez, Marcello Gugliotta, Domenico Chiarella   +6 more
wiley   +1 more source

The Dehydration of Serpentines and Extraction of Water

The Planetary Science Journal
Some groups of carbonaceous chondrites are dominated by phyllosilicates, specifically the serpentine group, which are characterized as alternating layers of silicates, metal cations, and hydroxyl (OH). Both antigorite, an Mg-rich member, and cronstedtite,
Leos Pohl, Daniel T. Britt
doaj   +1 more source

Petrology and origin of amoeboid olivine aggregates in CR chondrites [PDF]

, 2004
M. K. Weisberg, H. C. Connolly, D. S. Ebel   +2 more
openalex   +1 more source

Volatile Element Depletion of Carbonaceous Chondrites—Insights from Mass-dependent Zinc, Cadmium, and Tellurium Isotope Variations

The Astrophysical Journal
The origin of volatile depletion in the solar system remains a topic of intense debate. To further inform our understanding of the mechanisms involved, this study characterized the mass-dependent Zn, Cd, and Te isotope compositions and concentrations of ...
Elin M. Morton, Harvey Pickard, Frank Wombacher, Yihang Huang, Emeliana Palk, Rayssa Martins, Sven Kuthning, Maria Schönbächler, Mark Rehkämper   +8 more
doaj   +1 more source

Trace element geochemistry of ordinary chondrite chondrules: The type I/type II chondrule dichotomy [PDF]

, 2015
Emmanuel Jacquet, Olivier Alard, M. Gounelle   +2 more
openalex   +1 more source

Chondrule Destruction via Dust Collisions in Shock Waves

The Astrophysical Journal
A leading candidate for the heating source of chondrules and igneous rims is shock waves. This mechanism generates high relative velocities between chondrules and dust particles.
Yuji Matsumoto, Kosuke Kurosawa, Sota Arakawa   +2 more
doaj   +1 more source

Analytics on the FIB: ORION-SIMS and the Discovery of a Unique Chondrite-like, Precambrian Impactor [PDF]

, 2019
Matthew Ball, Richard Taylor, Joshua F. Einsle, Jean‐Nicolas Audinot, R. J. Harrison   +4 more
openalex   +1 more source

The mineralogy and alteration history of the Yamato-type (CY) carbonaceous chondrites (Supporting Data)

, 2023
Martin D. Suttle, A. J. King, Cheryl S. Harrison, Q. H. S. Chan, A. Greshake, R. Bartoschewitz, Andrew G. Tomkins, T. Salge, P. F. Schofield, S. S. Russell   +9 more
openalex   +1 more source