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• 40Ar/39Ar dating into the historical realm: calibration against Pliny the Younger

  Authors:P.R. Renne and W.D. SharpFrom:Science (Vol. 277, Issue 5330) Peer-Reviewed

  Aug. 29, 19972,137 words Article Laser incremental heating of sanidine from the pumice deposited by the Plinian eruption of Vesuvius in 79 A.D. yielded a [sup.40.Ar]/[sup.39.Ar] isochron age of 1925 [+ or -] 94 years ago. Close agreement with the...

• Reconstruction and evolution of Archean intracaldera facies: the Rouyn-Pelletier Caldera Complex of the Blake River Group, Abitibi greenstone belt, Canada

  Authors:L.N. Moore, R. Daigneault, H.M. Aird, N.R. Banerjee, and W.U. MuellerFrom:Canadian Journal of Earth Sciences (Vol. 53, Issue 4) Peer-Reviewed

  Apr. 201611,842 words Report 1460LSubvertically- to vertically-dipping Archean strata provide an excellent opportunity to study synvolcanic structures and internal organization of subaqueous volcanic complexes. The Abitibi greenstone belt in Quebec,...

• U-Pb zircon geochronology from the Alexander terrane, southeast Alaska: implications for the Greens Creek massive sulphide deposit

  Authors:Patrick J. Sack, Ron F. Berry, J. Bruce Gemmell, Sebastien Meffre, and Andrew WestFrom:Canadian Journal of Earth Sciences (Vol. 53, Issue 12) Peer-Reviewed

  Dec. 201611,797 words Article 1540LAbstract: This paper presents results of a laser ablation - inductively coupled plasma - quadrapole mass spectrometer (LA-ICP-QMS) U-Pb dating study of small in situ zircon grains from samples collected in the vicinity...

• Deformations tardi-grenvilliennes dans la ceinture parautochtone (Province de Grenville centrale) : contraintes geochronologiques par couplage de methodes U-Pb de haute resolution spatiale et de haute precision

  Authors:Sophie Jannin, Felix Gervais, Abdelali Moukhsil, Lars Eiving Augland, and James L. CrowleyFrom:Canadian Journal of Earth Sciences (Vol. 55, Issue 4) Peer-Reviewed

  Apr. 201817,361 words Report 1280LDans la ceinture parautochtone de la Province de Grenville centrale (reservoir Manicouagan), la datation des structures revele que l'orogene grenvillien a oblitere les fabriques anterieures. Ainsi, les structures D1 et...

• Crystallization and eruption ages of Breccia Museo (Campi Flegrei caldera, Italy) plutonic clasts and their relation to the Campanian ignimbrite

  Authors:Samantha K. Gebauer, Axel K. Schmitt, Lucia Pappalardo, Daniel F. Stockli, and Oscar M. LoveraFrom:Contributions to Mineralogy and Petrology (Vol. 167, Issue 1) Peer-Reviewed

  Jan. 20149,556 words Author abstract 1500LThe Campi Flegrei volcanic district (Naples region, Italy) is a 12-km-wide, restless caldera system that has erupted at least six voluminous ignimbrites during the late Pleistocene, including the > 300 [km.sup.3]...

• Geologically dated sea barriers calibrate a protein clock for Aegean water frogs

  Authors:Peter Beerli, Hansjurg Hotz, and Thomas UzzellFrom:Evolution (Vol. 50, Issue 4) Peer-Reviewed

  Aug. 19966,681 words Article Reliable estimates of phylogenetic relationships and divergence times are a crucial requirement for many evolutionary studies. but are usually difficult because fossils are scarce and their interpretation is often...

• [sup.176]Lu-[sup.176]Hf geochronology of garnet I: experimental determination of the diffusion kinetics of [Lu.sup.3+] and [Hf.sup.4+] in garnet, closure temperatures and geochronological implications

  Authors:Elias Bloch, Jibamitra Ganguly, Richard Hervig, and Weiji ChengFrom:Contributions to Mineralogy and Petrology (Vol. 169, Issue 2) Peer-Reviewed

  Feb. 20159,578 words Article 1740LThe [sup.176]Lu-[sup.176]Hf and [sup.147]Sm-[sup.143]Nd decay systems are routinely used to determine garnet (Grt)-wholerock (WR) ages; however, the [sup.176]Lu-[sup.176]Hf age of garnet is typically older than the...

• Timing of ductile shearing within the Druksiai-Polotsk deformation zone, Lithuania: a U-Pb titanite age/Plastiliste nihkeliikumiste vanus titaniidi U-Pb isotoopsusteemi alusel Druksiai-Polotski deformatsioonivoondis leedus

  Authors:Irma Vejelyte, Svetlana Bogdanova, Ekaterina Salnikova, Sonya Yakovleva, and Alevtina FedoseenkoFrom:Estonian Journal of Earth Sciences (Vol. 59, Issue 4) Peer-Reviewed

  Dec. 20103,007 words Report 1320LA U-Pb dating of titanite from an augen granitoid mylonite in the Drakkai-Polotsk Deformation Zone has yielded a concordant age of 1534[+ or -]9 Ma. This light brown titanite follows the foliation in the host rock and...

• U-Pb geochronology in Liverpool Land and Canning Land, East Greenland--the complex record of a polyphase Caledonian orogeny

  Authors:Fernando Corfu and Ebbe H. HartzFrom:Canadian Journal of Earth Sciences (Vol. 48, Issue 2) Peer-Reviewed

  Feb. 20119,786 words Report 1470LThe Liverpool Land--Canning Land region in East Greenland is the central-most basement high in the northeast Atlantic Caledonides. It contains a variety of rocks derived from the whole section of the Caledonian crust,...

• Bashing holes in the tale of Earth's troubled youth

  Author:Adam MannFrom:Nature (Vol. 553, Issue 7689) Peer-Reviewed

  Jan. 25, 20182,455 words Article 1320LAuthor(s): Adam Mann Early in Earth's history, roughly half a billion years after the planet formed, all hell broke loose in the inner Solar System. A barrage of asteroids -- some the size of Hong Kong -- pummelled...

• Early cultural developments on the eastern rim of the Tibetan plateau: Establishing a new chronological scheme for the Liangshan region.

  Author:Anke HeinFrom:Asian Perspectives: The Journal of Archaeology for Asia and the Pacific (Vol. 56, Issue 1) Peer-Reviewed

  Spring 201720,202 words Report 1460LABSTRACT Research on the eastern rim of the Tibetan Plateau is generally hampered by the lack of established chronologies. The mountains of southwest China in particular are not very well explored. As a point of...

• No evidence for tephra in Greenland from the historic eruption of Vesuvius in 79 CE: implications for geochronology and paleoclimatology.

  Authors:Gill Plunkett, Michael Sigl, Hans F. Schwaiger, Emma L. Tomlinson, Matthew Toohey, Joseph R. McConnell, et al.From:Climate of the Past (Vol. 18, Issue 1) Peer-Reviewed

  Jan. 18, 2022302 words Brief article Volcanic fallout in polar ice sheets provides important opportunities to date and correlate ice-core records as well as to investigate the environmental impacts of eruptions. Only the geochemical characterization of...

• Geology, geochronology, and fluid inclusion studies of the Xiaorequanzi volcanogenic massive sulphide Cu--Zn deposit in the East Tianshan Terrane, China

  Authors:Xi-Heng He, Xiao-Hua Deng, Leon Bagas, Jing Zhang, Chao Li, and Wen-Dong ZhangFrom:Canadian Journal of Earth Sciences (Vol. 57, Issue 12) Peer-Reviewed

  Dec. 20209,187 words Report 1420LThe Xiaorequanzi Cu--Zn deposit is in the westernmost part of East Tianshan Terrane in northwestern China. The deposit is unique in the region being a volcanogenic massive sulphide (VMS) deposit located near a zone (or...

• A chronometer for Earth's age

  Author:John ChambersFrom:Nature (Vol. 508, Issue 7494) Peer-Reviewed

  Apr. 20141,414 words Report 1420LSimulations of Earth's growth show a correlation between the timing of the Moon's formation and the amount of mass that Earth accreted afterwards. This relationship provides a way of measuring the age of our planet. See...

• The GPlates Geological Information Model and Markup Language

  Authors:X. Qin, J. Cannon, T. C. W. Landgrebe, C. Heine, R. J. Watson, and M. TurnerFrom:Geoscientific Instrumentation, Methods and Data Systems (Vol. 1, Issue 2) Peer-Reviewed

  Oct. 8, 201239 words Brief article Byline: X. Qin, R. D. Mü,ller, J. Cannon, T. C. W. Landgrebe, C. Heine, R. J. Watson, M. Turner To access, purchase, authenticate, or subscribe to the full-text of this article, please visit this link:...

• Timescales of crustal melting in the Higher Himalayan Crystallines (Sikkim, Eastern Himalaya) inferred from trace element-constrained monazite and zircon chronology

  Authors:Daniela Rubatto, Sumit Chakraborty, and Somnath DasguptaFrom:Contributions to Mineralogy and Petrology (Vol. 165, Issue 2) Peer-Reviewed

  Feb. 201313,308 words Chronology 1420LThe petrology and timing of crustal melting has been investigated in the migmatites of the Higher Himalayan Crystalline (HHC) exposed in Sikkim, India. The metapelites underwent pervasive partial melting through hydrous...

• Variation of illite/muscovite [sup.40]Ar/[sup.39]Ar age spectra during progressive low-grade metamorphism: an example from the US cordillera

  Authors:Charles Verdel, Ben A. van der Pluijm, and Nathan NiemiFrom:Contributions to Mineralogy and Petrology (Vol. 164, Issue 3) Peer-Reviewed

  Sept. 201210,699 words Author abstract 1490L[sup.40]Ar/[sup.39]Ar step-heating data were collected from micron to submicron grain-sizes of correlative illite- and muscovite-rich Cambrian pelitic rocks from the western United States that range in metamorphic grade...

• Formation and evolution of a proterozoic magmatic arc: geochemical and geochronological constraints from meta-igneous rocks of the ongole domain, eastern Ghats Belt, India

  Authors:Tapabrato Sarkar, Volker Schenk, and Jasper BerndtFrom:Contributions to Mineralogy and Petrology (Vol. 169, Issue 1) Peer-Reviewed

  Jan. 201510,359 words Article 1430LGeochemical data and U-Pb zircon results are presented for the intrusive meta-igneous rocks of the Ongole domain, a granulite-facies terrain of the Eastern Ghats Belt in India, with the aim of inferring the tectonic...

• Lifetime of an ocean island volcano feeder zone: constraints from U-Pb dating on coexisting zircon and baddeleyite, and [sup.40]Ar/[sup.39]Ar age determinations, Fuerteventura, Canary Islands

  Authors:James Allibon, Maria Ovtcharova, Francois Bussy, Michael Cosca, Urs Schaltegger, Denise Bussien, et al.From:Canadian Journal of Earth Sciences (Vol. 48, Issue 2) Peer-Reviewed

  Feb. 201114,509 words Report 1530LHigh-precision isotope dilution--thermal ionization mass spectrometry (ID-TIMS) U-Pb zircon and baddeleyite ages from the PX1 vertically layered mafic intrusion Fuerteventura, Canary Islands, indicate initiation of...

• Detrital zircon geochronology of ediacaran to cambrian deep-water strata of the Franklinian basin, northern Ellesmere Island, Nunavut: implications for regional stratigraphic correlations

  Authors:Luke P. Beranek, Victoria Pease, Robert A. Scott, and Tonny B. ThomsenFrom:Canadian Journal of Earth Sciences (Vol. 50, Issue 10) Peer-Reviewed

  Oct. 20137,912 words Report 1650LEnigmatic successions of deep-water strata referred to as the Nesmith beds and Grant Land Formation comprise the exposed base of the Franklinian passive margin sequence in northern Ellesmere Island, Nunavut. To test...