全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
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作者:Brian R. Jicha , Cristiano Nicosia ...
来源:[J].Geomorphology(IF 2.552), 2019, Vol.346Elsevier
摘要:Abstract(#br)We present a review of the geomorphology of the Tyrrhenian Sea coast of central Italy integrated by a novel structural-geomorphological study coupled with statistical analysis of topographic culminations and comparison with a Digital Elevation Model, aimed at re...
作者:Brian R. Jicha , Cristiano Nicosia ...
来源:[J].Geomorphology(IF 2.552), 2019, Vol.346Elsevier
摘要:Abstract(#br)We present a review of the geomorphology of the Tyrrhenian Sea coast of central Italy integrated by a novel structural-geomorphological study coupled with statistical analysis of topographic culminations and comparison with a Digital Elevation Model, aimed at re...
作者:Brian R. Jicha , Francis H. Brown
来源:[J].Quaternary Geochronology(IF 4.015), 2014, Vol.21, pp.53-57Elsevier
摘要:Abstract(#br)The Korath Range is the northernmost of five Quaternary volcanic fields along the axis of the Turkana rift of northern Kenya and southern Ethiopia. It is located within the Omo River valley of Ethiopia, a culturally diverse region that contains abundant Plio-Ple...
作者:Brian R. Jicha , Elena Zanella
来源:[J].Quaternary Geochronology(IF 4.015), 2014, Vol.21, pp.16-28Elsevier
摘要:Abstract(#br)The Blake excursion was among the first recognized with directional and intensity behavior known mainly from marine sediment and Chinese loess. Age estimates for the directional shifts in sediments are poorly constrained to about 118−100 ka, i.e., at the marine ...
作者:Brian R. Jicha , Sebastien Nomade ...
来源:[J].Quaternary International(IF 1.962), 2019, Vol.525, pp.54-77Elsevier
摘要:Abstract(#br)We present a geomorphological, stratigraphical and geochronological study reconstructing a suite of paleo-surfaces in a 200 km-long coastal sector of the central Tyrrhenian Sea between Argentario and Circeo promontories. Identification of the near-shore deposits asso...
作者:Brian R. Jicha , Brad S. Singer , Peter Sobol
来源:[J].Chemical Geology(IF 3.154), 2016, Vol.431, pp.54-66Elsevier
摘要:Abstract(#br)The rewards from resolving the tempo of magmatic, paleobiologic, paleoclimatic, and tectonic processes at better than the per mil level of precision have spurred a quest within the geochronology community to improve the precision, accuracy, and calibration of se...
作者:Francis H. Brown , Brian R. Jicha , R.E. Leakey
来源:[J].Journal of African Earth Sciences(IF 1.229), 2016, Vol.114, pp.74-77Elsevier
摘要:Abstract(#br)The Kajong Formation in Marsabit District, northern Kenya has yielded a Miocene mammalian fauna consisting of nine taxa. It is capped by a basalt 40 Ar/ 39 Ar dated at 19.1 ± 0.1 Ma, and a volcanic clast from a conglomerate within the formation yielded an age of...
作者:... Terrence J. Boerboom , Brian R. Jicha , Bradley S. Singer
来源:[J].Precambrian Research(IF 4.441), 2015, Vol.257, pp.83-93Elsevier
摘要:Abstract(#br)A 2100 Ma, 420 cm-thick metasaprolite, which is devoid of plagioclase but contains abundant microcline, occurs in the Archean McGrath Gneiss beneath the overlying Paleoproterozoic Denham Formation. Despite being recrystallized under amphibolite-facies conditions...
作者:Francis H. Brown , Brian R. Jicha
来源:[J].Journal of African Earth Sciences(IF 1.229), 2016, Vol.114, pp.63-66Elsevier
摘要:Abstract(#br)New, high-precision 40 Ar/ 39 Ar ages from volcanic rocks in northwestern Kenya are provided for some areas of exposure in this remote area. We report seven 40 Ar/ 39 Ar ages generated from single crystal total fusion experiments on alkali feldspar separated fro...
作者:Brian R. Jicha , Daniel J. Condon ...
来源:[J].Earth and Planetary Science Letters(IF 4.349), 2014, Vol.405, pp.25-38Elsevier
摘要:Abstract(#br)The Réunion event is one of the earliest recognized periods of normal polarity within the reversed Matuyama chron. Named for the site at which it was first discovered on Réunion Island, it has since purportedly been found globally in both volcanic rocks and sedi...

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