Results 61 to 70 of about 20,851 (228)

Refined Ordovician timescale reveals no link between asteroid breakup and biodiversification

Nature Communications, 2017
The high amount of L-type chondrites discovered in Ordovician sediments has previously been linked with the Great Ordovician Biodiversification Event. But here, Lindskoget al.
A. Lindskog, M. M. Costa, C.M.Ø. Rasmussen, J. N. Connelly, M. E. Eriksson   +4 more
doaj   +1 more source

Uncertainties in physical properties of Itokawa-like asteroids widen constraints on their formation time

Earth, Planets and Space, 2023
One of the outstanding questions in planetary science is to determine how the fundamental mechanical and physical properties of materials determine the thermal evolution of asteroids, and which properties have the greatest influence.
Jonas Hallstrom, Maitrayee Bose
doaj   +1 more source

The Fountain Hills meteorite: A new CBa chondrite from Arizona [PDF]

, 2004
We describe a new member of the CR chondrite clan and compare it to other members of this ...
Franchi, I.A., Greenwood, R.G, Killgore, M., Lauretta, D.S., Verchovsky, A.V.   +4 more
core  

The Meteoritical Bulletin, No. 114

Meteoritics &Planetary Science, EarlyView.
Abstract Meteoritical Bulletin 114 contains the 1944 meteorites approved by the Nomenclature Committee of the Meteoritical Society in 2025. It includes 15 observed falls, 1336 ordinary chondrites, 213 HED, 106 carbonaceous chondrites (including 8 ungrouped), 86 lunar meteorites, 39 ureilites, 28 iron meteorites (2 ungrouped), 24 martian meteorites, 24 ...
Jérôme Gattacceca, Jeffrey N. Grossman, Michael M. Weisberg, Ansgar Greshake, Natasha V. Almeida, Camille Cartier, Jon M. Friedrich, Cyrena Goodrich, Katherine H. Joy, Maria Schönbächler, Devin L. Schrader, Hikaru Yabuta, Bidong Zhang   +12 more
wiley   +1 more source

Hydrogen isotopic composition of the Tagish Lake meteorite: comparison with other carbonaceous chondrites [PDF]

, 2001
A study into the hydrogen isotopic characteristics of whole rock samples of carbonaceous chondrites and their comparison with a whole rock sample of the Tagish Lake ...
Franchi, I. A., Gilmour, I., Pearson, V. K., Sephton, M. A.   +3 more
core  

Atmospheric dust is a global nutrient source for plants via foliar uptake

New Phytologist, EarlyView.
Summary Atmospheric mineral dust is a critical nutrient supplier to marine ecosystems, but its role in terrestrial plant nutrition remains underexplored due to the assumption that nutrients are acquired solely from soils via roots. Here, we demonstrate that plants directly acquire nutrients from dust through leaves, revealing an unrecognized ...
Anton Lokshin, Daniel Palchan, Marcelo Sternberg, Tom Goren, Mahdi (André) Nakhavali, Avner Gross   +5 more
wiley   +1 more source

Petrography and mineral chemistry of Escalón meteorite, an H4 chondrite, México

Revista Mexicana de Ciencias Geológicas, 2018
The Escalón meteorite, a crusted mass weighing 54.3 g, was recovered near Zona del Silencio in Escalón, state of Chihuahua, México. The stone is an ordinary chondrite belonging to the high iron group H, type 4.
Adela M. Reyes-Salas, Gerardo Sánchez-Rubio, Patricia Altuzar-Coello, Fernando Ortega-Gutiérrez, Daniel Flores-Gutiérrez, Karina Cervantes-de la Cruz, Eugenio Reyes, Carlos Linares   +7 more
doaj  

High pressure minerals in the Château-Renard (L6) ordinary chondrite: implications for collisions on its parent body [PDF]

, 2018
We report the first discoveries of high-pressure minerals in the historical L6 chondrite fall Château-Renard, based on co-located Raman spectroscopy, scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy and electron backscatter ...
Anand, Mahesh, Asimow, Paul D., Baziotis, Ioannis, Cernok, Ana, Ferrière, Ludovic, Hu, Jinping, Ma, Chi, Topa, Dan   +7 more
core   +2 more sources

Climate conditions on the South‐Iberian Palaeomargin during the latest Pliensbachian to early Toarcian: A mineralogical and geochemical study from hemipelagic deposits

Sedimentology, EarlyView.
ABSTRACT The integrated analysis of lithofacies, mineralogy and geochemistry of the hemipelagic marine succession exposed in La Cerradura section (South‐Iberian Palaeomargin) provides new information to characterise the palaeoenvironmental conditions during the latest Pliensbachian to early Toarcian, including the Jenkyns Event.
Chaima Ayadi, Isabel Abad, Elisa Laita, Ali Mokhtar Samet, Matías Reolid   +4 more
wiley   +1 more source

Ductile Extrusion Triggered by Continental Collision in NE Brazil

Terra Nova, EarlyView.
ABSTRACT The Borborema Province in northeastern Brazil hosts one of the world's largest strike‐slip shear zone networks, active during the late Neoproterozoic assembly of West Gondwana. Whether these shear zones initiated during active continental collision or as a post‐orogenic response to far‐field stresses remains debated.
L. R. Tesser, C. E. Ganade, C. R. Cioffi, J. B. Forshaw, M. Hueck, E. Celis, M. A. S. Basei   +6 more
wiley   +1 more source