Results 91 to 100 of about 76,911 (338)

High‐Titanium Zircon Rims in Rhyolite – A Reflection of Adiabatic Ascent?

Geological Journal, EarlyView.
The ascent of granitic magma from source to emplacement is rapidly achieved through dyking, resulting in negligible heat loss to the surrounding wallrock (i.e., adiabatic). Zircon growth during ascent can record the changing magma conditions including adiabatic cooling and heating, resulting in high titanium rims on low titanium cores without ...
Carson Kinney, Holden Little, Chris Yakymchuk   +2 more
wiley   +1 more source

Origins of the Pangkaimen Au Deposit in the Northern Great Xing'an Range, China: Evidence From Geochronological, Geochemical, Fluid Inclusion, and H–O–S–Pb Isotope Data

Geological Journal, EarlyView.
The Pangkaimen Au–Ag deposits belong to the epithermal Au deposits, which are of great significance for guiding the research and development of this type of gold deposit. Metallogenic model diagram of Pangkaimen Au–Ag deposit. ABSTRACT The gold (Au) metallogenic belt in the northern Great Xing'an Range is characterised by the wide occurrence of the ...
Sheng Lu, Hongpeng Chen, Chenglu Li, Ye Wang, Tiesheng Li, Rigen Wu, Zengtao Li, Zhichao Song, Xiannan Zhu   +8 more
wiley   +1 more source

Are regional stages necessary? [PDF]

, 2005
The bipartition of the Carboniferous System adopted by the International Commission of Stratigraphy for the world stratigraphic chart is impractical in Gondwana.
Gonzalez, Carlos Roberto
core  

Synonymy and stratigraphic ranges of Belemnopsis in the Heterian and Ohauan Stages (Callovian-Tithonian), southwest Auckland, New Zealand. [PDF]

, 2003
Belemnopsis stevensi, Belemnopsis maccrawi, and Belemnopsis sp. A (Challinor 1979a) are synonymous; B. stevensi has priority. New belemnite material from Kawhia Harbour and Port Waikato, together with graphical study methods, indicates that many small ...
Challinor A. B., Challinor A. B., Challinor A. B., Challinor A. B., Fleming C. A., Francis D. A., Hudson N., Hudson N., Jeletzky J. A., King D., Marwick J., Purser B. H., Riegraf W., Stevens G. R., Waterhouse B. C.   +14 more
core   +2 more sources

The Impact of Democratization and Globalization on Environmental Sustainability in Brazil

Geological Journal, EarlyView.
Fossil fuel, economic globalisation, and economic growth drive environmental degradation while democratisation positively influences environmental quality. ABSTRACT Although Brazil still possesses significant ecological reserves, the surplus in its biocapacity has been rapidly declining in recent years.
Mustafa Naimoğlu, Mehmet Metin Dam, Serdar Ongan, Andrew Adewale Alola   +3 more
wiley   +1 more source

The stratigraphy of the Penarth Group (Late Triassic) of the East Devon coast [PDF]

, 2008
The cliff and foreshore exposures in the Devon part of the Dorset and East Devon Coast World Heritage Site expose an unbroken late Triassic to early Jurassic succession.
Gallois, Ramues W
core  

Middle and Late Pleistocene environmental history of the Marsworth area, south-central England [PDF]

, 2014
To elucidate the Middle and Late Pleistocene environmental history of south-central England, we report the stratigraphy, sedimentology, palaeoecology and geochronology of some deposits near the foot of the Chiltern Hills scarp at Marsworth ...
Adamiec, Andrew Currant, Andrews, Avery, Ballantyne, Barrow, Bascomb, Bates, Bates, Bates, Bowen, Bowen, Bowen, Bowen, Bowen, Bowen, Bowen, Bowen, Bowen, Bridgland, Candy, Candy, Candy, Canti, Christopher P. Green, Clark, Clayden, Coope, Coope, Currant, Danielle C. Schreve, David H. Keen, David Parish, David Q. Bowen, de Deckker, de Rouffignac, EPICA community members, Evans, Evans, Evans, Galbraith, Gibbard, Gibbard, Gibbard, Gibbard, Green, Green, Gregory, Griffiths, Hamblin, Harmer, Harris, Hill, Hiltermann, Holyoak, Horton, Huntley, Ian Candy, Jarvis, John A. Catt, John G. Evans, Jones, Jones, Jouzel, Julian B. Murton, Kandiano, Kaufman, Keen, Keen, Keen, Keen, Keen, Kerney, Kerney, Kirsty Penkman, Linda L. York, Lisiecki, Lister, Lister, Loveday, Maddy, Markey, McManus, Meijer, Meisch, Mejdahl, Michael P. Kerney, Michael R. Frogley, Miller, Miller, Morgan, Mortimore, Murray, Murray, Murray, Murton, Murton, Murton, Murton, Murton, Murton, Oakley, Oches, Pawley, Penkman, Penkman, Penkman, Penkman, Penkman, Peter Worsley, Phillip S. Toms, Preece, Preece, Prescott, Robinson, Rose, Rousseau, Schreve, Sheila Taylor, Shephard-Thorn, Shephard-Thorn, Sherlock, Sherlock, Soil Survey of England and Wales, Sparks, Stathoplos, Straw, Sumbler, Sumbler, Sykes, Wehmiller, Wenban-Smith, Whiteman, Williams, Williams, Williams, Worsley, Zimmerman   +137 more
core   +2 more sources

Evidence From Microscopy and U–Pb Geochronology as a Clue to the Influence of the Cretaceous Magmatism in the Diagenesis of Pre‐Salt Carbonate Reservoirs in the Santos Basin (Brazil)

Geological Journal, EarlyView.
Carbonates from Santos Basin revealed U–Pb ages correlated with basalt ages (A), suggesting that they were formed during magmatic events. These events placed hot CO2 in the reservoir, which, when mixed with carbonate‐rich cold water (B), led to thermal convection, enabling the formation of the U contained in the carbonates.
Marco António Ruivo de Castro e Brito, Cristiano Leite Sombra, Davy Raeder Brandão, Cleverson Guizan Silva, Sidney Luiz de Matos Mello, Eugênio Vaz dos Santos Neto, Rui Jorge Fernandes Baptista, Ramsés Capilla, Luiz Antônio Pierantoni Gambôa   +8 more
wiley   +1 more source

Growth and form of the mound in Gale Crater, Mars: Slope wind enhanced erosion and transport [PDF]

, 2013
Ancient sediments provide archives of climate and habitability on Mars. Gale Crater, the landing site for the Mars Science Laboratory (MSL), hosts a 5-km-high sedimentary mound (Mount Sharp/Aeolis Mons). Hypotheses for mound formation include evaporitic,
Kite, Edwin S., Lamb, Michael P., Lewis, Kevin W., Newman, Claire E., Richardson, Mark I.   +4 more
core  

The calcareous nannofossils and magnetostratigraphic results from the Upper Tithonian-Berriasian of Feodosiya region (Eastern Crimea) [PDF]

, 2019
This article is concerned with nannofossil study of Tithonian-Berriasian sediments of Eastern Crimea. The NJT 16, NJT 17a, NJT 17b, NKT, and NK 1 nannofossil zones were determined. The occurrence of Nannoconus kamptneri minor, one of the potential marker-
Arkadiev, V., Baraboshkin, E., Concheyro, Graciela, Guzhikov, A., Lescano, Marina Aurora   +4 more
core   +1 more source