Results 51 to 60 of about 5,951 (224)
Revisiting the Hummeln structure, Sweden—A shallow marine Cambrian impact structure
Meteoritics &Planetary Science, EarlyView.Abstract Hummeln is a simple impact structure located in south‐eastern Sweden. It is approximately 1.2 km in diameter and almost completely covered by a lake. Here, we present the first detailed investigation of impactites and mapping of the 164.25 m deep drill core Hummeln‐1 with a focus on impact metamorphism and the impact process.
S. Alwmark +8 more
wiley +1 more source
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 +4 more
wiley +1 more source
Crystallography of craniid brachiopods by electron backscatter diffraction (EBSD)
, 2007 Electron backscatter diffraction (EBSD) is used to determine the detailed crystallographic orientation of calcite crystals of craniid brachiopods in the context of shell ultrastructure.
Perez-Huerta, Alberto +2 more
core +1 more source
Crystallography and diagenesis in fossil craniid brachiopods
, 2007 One of the fundamental questions in biomineralization is how organisms control crystallographic orientation during biomineral production. The understanding of how diagenetic changes influence the preservation of original crystallographic patterns in ...
England, J +5 more
core +1 more source
Distribution of brachiopods in the Lower Visean deposits in the Eastern Urals
Литосфера, 2019 Subject. This paper is aimed at investigating the distribution of brachiopods across the stratotypes of the Lower Visean regional substages and formations, as well as of the Upper Visean Zhukovsky regional substage, which are presently located in the ...
N. A. Kucheva
doaj +1 more source
Provenance of Atlantic lingulid brachiopods
, 2000 Living lingulid brachiopods are ubiquitous in low-latitude, marine infaunas. Lingula occurs throughout the Pacific and Indian oceans with the only Atlantic species, L. parva. confined to West Africa.
Long, Sarah L +3 more
core +1 more source
Synchrotron radiation X-ray tomographic microscopy (SRXTM) of brachiopod shell interiors for taxonomy: Preliminary report [PDF]
Geološki Anali Balkanskoga Poluostrva, 2010 Synchrotron radiation X-ray tomographic microscopy (SRXTM) is a non-destructive technique for the investigation and visualization of the internal features of solid opaque objects, which allows reconstruction of a complete three-dimensional image
Motchurova-Dekova Neda +1 more
doaj +1 more source
Revista Mexicana de Ciencias Geológicas, 2019 Recent work on the taxonomy and paleobiogeographic affinities of Mesozoic brachiopods from Mexico is reviewed. Brachiopods are lesser components of Mesozoic marine fossil assemblages from Mexico but are abundant at certain horizons… in order to continue,
Michael R. Sandy
doaj
Scientia Marina, 2004 The present-day brachiopods from the Mediterranean Sea were thoroughly described by nineteenth-century workers, to the extent that Logan´s revision in 1979 listed the same 11 species as Davidson, almost 100 years earlier.
A. Logan +3 more
doaj +1 more source