Results 41 to 50 of about 164,387 (261)
Oxygen isotopic and petrological constraints on the origin and relationship of IIE iron meteorites and H chondrites [PDF]
, 2011 New oxygen isotopic measurements of IIEs and H chondrites are indistinguishable — strengthening a possible common origin for these groups.
Anand, M. +4 more
core
The Depositional Record, EarlyView.The Joulters ooid sandbody of northern Great Bahama Bank is a vast expanse of muddy ooid sands partly rimmed by clean ooid sands and formed into a relatively thick layer of significant extent. Knowledge of the development of depositional and diagenetic patterns in the Joulters example has forwarded our general understanding of carbonate sedimentology ...
Harris Paul
wiley +1 more source
Experimental study of laboratory-heated CM2 chondrites Mighei and Murchison [PDF]
, 2006 We conducted experimental heating of two CM2 chondrites, Murchison and Mighei, to study changes in their oxygen isotopic compositions and mineralogy and explore possible genetic relationships between MCCs and normal ...
Baker, L. +7 more
core
Intergranular diffusion rates from the analysis of garnet surfaces: implications for metamorphic equilibration [PDF]
, 2017 Novel approaches to garnet analysis have been used to assess rates of intergranular diffusion between different matrix phases and garnet porphyroblasts in a regionally metamorphosed staurolite-mica-schist from the Barrovian-type area in Scotland.
Chung, Peter +2 more
core +1 more source
The Depositional Record, EarlyView.Emblematic of global coral‐reef ecosystem decline, the coral ecosystem‐engineer Acropora palmata is now rare throughout much of the western Atlantic. We report for the first time, a significant record of late‐Holocene A. palmata populations that existed from ~4500 to 375 years before present in the Dry Tortugas, FL, USA.
Anastasios Stathakopoulos +4 more
wiley +1 more source
Isheyevo Meteorite: Genetic link between CH and CB chondrites? [PDF]
, 2006 Based on the mineralogy, petrography, bulk chemical, oxygen, and nintrogen isotopic compositions and 40Ar-39Ar age, Isheyevo is genetically related to CH and CB carbonaceous chondrites and provides a link between these group of pristine ...
Brandstätter, F. +7 more
core
The Depositional Record, EarlyView.The Upper Permian Castile Formation of the Delaware Basin, a 515.3 m (1690.6 ft) thick deep‐water evaporitic sequence dominated by anhydrite and halite, is the focus of this study. This study's sedimentological and geochemical analysis of cores from the basin's centre and margin reveals that dynamic reflux of deep hypersaline brines significantly ...
Ander Martinez‐Doñate +6 more
wiley +1 more source
The oxygen isotopic composition of water extracted from unequilibrated ordinary chondrites [PDF]
, 2003 The oxygen isotopic composition of water extracted from the unequilibrated ordinary chondrites Semarkona and Bishunpur reveals differences in alteration mineralogy and levels of isotopic enrichment – reflecting key parameters in the alteration ...
Baker, L. +3 more
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