自 1973 年出版以来，《地质学》的特点是每月快速出版约 23 篇经过评审的短篇（四页）论文。文章涵盖所有地球科学学科，包括新的调查和挑衅性话题。地球科学专业的地质学家和大学水平的学生使用这本广泛阅读的期刊来跟上科学研究的趋势。在线论坛部分促进了作者与读者的对话。在超大尺寸松散插页上包括彩色插图和偶尔的大幅面插图。

Since its inception in 1973, Geology has featured approximately 23 peer-reviewed short papers (four pages each) published rapidly each month. The articles cover all disciplines of Earth sciences, including new investigations and provocative topics. Geologists and university-level students in the Earth sciences widely read this journal to keep up with trends in scientific research. The online forum section facilitates dialogue between authors and readers. Color illustrations and occasional large-format illustrations are included on oversized loose inserts.

《Geology》自1973年创刊以来，每月快速出版约23篇经过同行评审的短篇论文（四页）。这些文章涵盖了所有地球科学领域，包括新的研究调查和具有挑战性的话题。地球科学专业的地质学家和大学生广泛阅读这本期刊，以跟踪科学研究的最新趋势。期刊的在线论坛部分促进了作者与读者之间的交流。此外，期刊还在超大尺寸的松散插页上包含彩色插图和偶尔的大幅面插图。

Geology

Subglacial Lake Whillans (SLW), West Antarctica, is an active component of the subglacial hydrological network located beneath 800 m of ice.The fill and drain behavior of SLW leads to long (years to decades) water residence times relative to those in mountain glacier systems.Here, we present the aqueous geochemistry of the SLW water column and pore waters from a 38-cm-long sediment core.Stable isotopes indicate that the water is primarily sourced from basal-ice melt with a minor contribution from seawater that reaches a maximum of ~6% in pore water at the bottom of the sediment core.Silicate weathering products dominate the crustal (non-seawater) component of lake-and pore-water solutes, and there is evidence for cation exchange processes within the clay-rich lake sediments.The crustal solute component ranges from 6 meq L -1 in lake waters to 17 meq L -1 in the deepest pore waters.The porewater profiles of the major dissolved ions indicate a more concentrated solute source at depth (>38 cm).The combination of significant seawater and crustal components to SLW lake and sediment pore waters in concert with ion exchange processes result in a weathering regime that contrasts with other subglacial systems.The results also indicate cycling of marine water sourced from the sediments back to the ocean during lake drainage events.

Alexander B. Michaud

Mark L. Skidmore

Andrew C. Mitchell

Trista J. Vick-Majors

Carlo Barbante

Clara Turetta

Will vanGelder

John C. Priscu

Solute sources and geochemical processes in Subglacial Lake Whillans, West Antarctica

The mid-Holocene hydroclimates and the forcing mechanisms over arid Central Asia (ACA) are hotly debated in the context of global climate change. It is widely assumed that ACA Holocene precipitation broadly followed and/or was out-of-phase with Northern Hemisphere solar insolation. However, here we show a broadly antiphase relationship between Holocene boreal solar insolation and ACA hydroclimatic trend revealed from a well-dated peat core (at the Big Black peatland; BBP) in northwestern China, southern Altai Mountains. Multiple proxies, including peat development rate, pollen assemblages, and peat cellulose isotopic records, show wet conditions during the early and late Holocene, but drought condition during the mid-Holocene. This hydroclimatic pattern is similar to those extracted from other peatlands nearby and those inferred from sedimentary records in lakes in adjacent regions. The trend of δ18O in BBP peat cellulose is similar to that of a stalagmite in northern Xinjiang, both of which record the Holocene atmospheric precipitation δ18O trend over ACA areas and possibly suggest a changing proportion of glacier meltwater supply. We speculate that the mid-Holocene drought over ACA could be ascribed to: (1) the northward movement of the westerlies, such that when the westerlies moved northward under warm conditions, less water vapor was transported to ACA, and vice versa, and (2) increased evaporation under mid-Holocene warm conditions. The data from this study and the potential mechanisms suggest that drier conditions are expected over ACA areas under a continuous global warming expectation.

Hai Xu

Kang’en Zhou

Jianghu Lan

Guilin Zhang

Xinying Zhou

Arid Central Asia saw mid-Holocene drought

Abstract Ammonoids suffered a diversity bottleneck during the Permian-Triassic mass extinction (PTME) and experienced a rapid diversification in the Early Triassic. However, the kinds of ammonoids that were more likely to survive the PTME and that fueled subsequent diversification are still poorly known. We compiled a comprehensive morphological data set and used the nonmetric multidimensional scaling method to reveal the impact of the PTME on the morphological selectivity of ammonoids. Our results show that postextinction taxa occupied a quite different morphospace when compared with the pre-extinction assemblages. The survivors were mainly smooth and weakly ornamented forms, while the late Permian species were dominated by coarsely ornamented forms. Contrary to previously recognized nonselective patterns, these results suggest a morphological selectivity of the Permian-Triassic crisis. Newcomers in the Griesbachian were mainly compressed and smooth forms. This morphological shift from the coarsely ornamented ammonoids dominating the Changhsingian to the smooth ammonoids dominating the Griesbachian possibly suggests an ecological turnover of ammonoids during the PTME.

Xu Dai

Dieter Korn

Haijun Song

Morphological selectivity of the Permian-Triassic ammonoid mass extinction

Whole-rock trace-element analyses contain previously unutilized evidence of mantle source fertility, degree of partial melting, and silicate melt hydration state that are applicable to arc magmatism globally. Spidergram arrays of gold-fertile mafic melts have steeper slopes than gold-infertile ones, characterized by higher Ba/Zr, Nb/Y, and U/Yb. Spidergrams of gold-fertile mafic magmas indicate relatively low percentage melting of lithospheric mantle metasomatized by migrating silicate melts as well as aqueous fluids. Gold-fertile and -infertile melts retain distinctively high Ba/Zr, Nb/Y, and U/Yb across the mafic-to-felsic differentiation series. Plots of V/Y versus Ba/Zr discriminate relative hydration states during magmatic differentiation. The ability of these ratios to discriminate gold-mineralizing magmas is demonstrated by comparison of barren reference suites with our compilation of the compositions of Phanerozoic magmas that generated 138 magmatic-hydrothermal gold deposits worldwide. The distinction between mafic melt compositions in mineralized and barren igneous complexes demonstrates that gold metallogenic fertility and infertility are primary properties of melts generated in different mantle source regions. Magmatic gold fertility typically pervades gold ore provinces for the duration of the regional metallogenic epoch, until changing geodynamics modifies the balance of mantle melt sources.

Carolina Mafra

Robert Loucks

Marco Fiorentini

Distinctive source and hydration state of gold-ore−forming arc magmas

金矿成矿弧岩浆的独特来源与水化状态

Research Article| October 01, 2003 Building the Pamirs: The view from the underside Mihai N. Ducea; Mihai N. Ducea 1Department of Geosciences, University of Arizona, Tucson, Arizona 85721, USA Search for other works by this author on: GSW Google Scholar Valery Lutkov; Valery Lutkov 2Geological Institute of the Tajik Academy of Science, 734063, Dushanbe, Tajikistan Search for other works by this author on: GSW Google Scholar Vladislav T. Minaev; Vladislav T. Minaev 2Geological Institute of the Tajik Academy of Science, 734063, Dushanbe, Tajikistan Search for other works by this author on: GSW Google Scholar Bradley Hacker; Bradley Hacker 3Department of Geological Sciences, University of California, Santa Barbara, California 93106-9630, USA Search for other works by this author on: GSW Google Scholar Lothar Ratschbacher; Lothar Ratschbacher 4Institut für Geowissenschaften, Technische Universität Bergakademie Freiberg, 09599 Freiberg, Germany Search for other works by this author on: GSW Google Scholar Peter Luffi; Peter Luffi 5Department of Geology and Geophysics, University of Bucharest, Bucharest 70139, Romania Search for other works by this author on: GSW Google Scholar Martina Schwab; Martina Schwab 6Institut für Geowissenschaften, Universität Tübingen, 72076 Tübingen, Germany Search for other works by this author on: GSW Google Scholar George E. Gehrels; George E. Gehrels 7Department of Geosciences, University of Arizona, Tucson, Arizona 85721, USA Search for other works by this author on: GSW Google Scholar Michael McWilliams; Michael McWilliams 8Department of Geological and Environmental Sciences, Stanford University, Stanford, California 94305-2115, USA Search for other works by this author on: GSW Google Scholar Jeffrey Vervoort; Jeffrey Vervoort 9Department of Geology, Washington State University, Pullman, Washington 99164, USA Search for other works by this author on: GSW Google Scholar James Metcalf James Metcalf 10Department of Geological and Environmental Sciences, Stanford University, Stanford, California 94305-2115, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Mihai N. Ducea 1Department of Geosciences, University of Arizona, Tucson, Arizona 85721, USA Valery Lutkov 2Geological Institute of the Tajik Academy of Science, 734063, Dushanbe, Tajikistan Vladislav T. Minaev 2Geological Institute of the Tajik Academy of Science, 734063, Dushanbe, Tajikistan Bradley Hacker 3Department of Geological Sciences, University of California, Santa Barbara, California 93106-9630, USA Lothar Ratschbacher 4Institut für Geowissenschaften, Technische Universität Bergakademie Freiberg, 09599 Freiberg, Germany Peter Luffi 5Department of Geology and Geophysics, University of Bucharest, Bucharest 70139, Romania Martina Schwab 6Institut für Geowissenschaften, Universität Tübingen, 72076 Tübingen, Germany George E. Gehrels 7Department of Geosciences, University of Arizona, Tucson, Arizona 85721, USA Michael McWilliams 8Department of Geological and Environmental Sciences, Stanford University, Stanford, California 94305-2115, USA Jeffrey Vervoort 9Department of Geology, Washington State University, Pullman, Washington 99164, USA James Metcalf 10Department of Geological and Environmental Sciences, Stanford University, Stanford, California 94305-2115, USA Publisher: Geological Society of America Received: 04 Apr 2003 Revision Received: 12 Jun 2003 Accepted: 16 Jun 2003 First Online: 02 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2003) 31 (10): 849–852. https://doi.org/10.1130/G19707.1 Article history Received: 04 Apr 2003 Revision Received: 12 Jun 2003 Accepted: 16 Jun 2003 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Mihai N. Ducea, Valery Lutkov, Vladislav T. Minaev, Bradley Hacker, Lothar Ratschbacher, Peter Luffi, Martina Schwab, George E. Gehrels, Michael McWilliams, Jeffrey Vervoort, James Metcalf; Building the Pamirs: The view from the underside. Geology 2003;; 31 (10): 849–852. doi: https://doi.org/10.1130/G19707.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The Pamir mountains are an outstanding example of extreme crustal shortening during continental collision that may have been accommodated by formation of a thick crust—much thicker than is currently thought—and/or by continental subduction. We present new petrologic data and radiometric ages from xenoliths in Miocene volcanic rocks in the southeastern Pamir mountains that suggest that Gondwanan igneous and sedimentary assemblages were underthrust northward, buried to >50–80 km during the early stage of the India-Asia collision, and then heated and partly melted during subsequent thermal relaxation before finally being blasted to the surface. These xenoliths, the deepest crustal samples recovered from under any active collisional belt, provide direct evidence for early Cenozoic thickening of the Pamirs and lower-crustal melting during collision; the xenoliths also suggest that the present mountain range was a steady-state elevated plateau for most of the Cenozoic. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.

Mihai N. Ducea

Valery Lutkov

Vladislav T. Minaev

Bradley Hacker

Lothar Ratschbacher

Peter Luffi

Martina Schwab

George E. Gehrels

Michael McWilliams

Jeffrey Vervoort

James Metcalf

Building the Pamirs: The view from the underside

建设帕米尔：从底层视角

Early landmass emergence impacted marine chemistry and biosphere evolution by supplying nutrients through continental weathering. However, uncertainties persist regarding the timing of emergence and onset of early continental weathering. We present a compilation of germanium (Ge) and silicon (Si) in banded iron formations (BIFs) to assess Archean weathering. By leveraging the inverse correlation between Ge/Si ratios and Si contents in BIFs, we interpolate the evolution of Archean seawater Ge/Si for the first time. Our analyses reveal a stepwise decrease in Ge/Si, from near-hydrothermal values to those resembling continental input, at ca. 3.5 Ga. Based on a Ge-Si mass balance model, we propose that this shift is attributable to increased riverine fluxes, coinciding with the rapid emergence of continental crust. Significantly, this implies that two crucial prerequisites for the establishment of a marine biosphere were fulfilled in the early Archean: (1) the presence of marginal marine environments suitable for benthic and planktonic communities; and (2) a supply of terrestrially sourced nutrients.

Changle Wang

Leslie J. Robbins

Zidong Peng

Lianchang Zhang

Bo Wan

Kurt O. Konhauser

The onset of continental weathering recorded in Archean banded iron formations

古元古代条带状铁建造中记录的大陆风化开始

The giant South China low-temperature metallogenic domain (LTMD) hosts many low-temperature hydrothermal systems (e.g., the Youjiang Au-As-Sb-Hg ore deposits, Xiangzhong Sb-Au ore deposits, and Xiangqian Hg ore deposits), which provide ∼80% of the global Hg metal production. Here, we study the Hg isotopic composition of the Xiangqian Hg deposits and re-evaluate available data on the Youjiang Au-As-Sb-Hg deposits and Xiangzhong Sb-Au deposits. Cinnabar samples from eight Xiangqian Hg deposits display negative to near-zero Δ199Hg values, suggesting that their Hg is from two sources: (1) the asthenospheric mantle with near-zero Δ199Hg values, and (2) the Precambrian basement with negative Δ199Hg values. Such mixing is also observed in the Youjiang Au-As-Sb-Hg deposits and Xiangzhong Sb-Au deposits. Combining the ages of these deposits, we infer that plate subduction and collision during Caledonian, Indosinian, and Yanshanian tectonic-thermal events triggered lithospheric extension, asthenospheric upwelling, and basement remobilization within the South China craton, leading to the generation of magmatic-hydrothermal fluids and metal-rich crustal fluids to form low-temperature hydrothermal systems in the LTMD. This work demonstrates that Hg-bearing low-temperature hydrothermal deposits in China have distinct δ202Hg-Δ199Hg patterns from those in Europe and North and South America, implying that Hg isotopes can be used for tracing the sources of Hg in the global market.

Bizheng Yang

Chenchen Yang

Zhendong Tian

Changzhou Deng

Bernd Lehmann

Runsheng Yin

Unique mercury isotopic signature of mercury-bearing hydrothermal systems in South China and its geological and environmental implications

中国华南含汞热液系统独特的汞同位素特征及其地质与环境意义

Sequence stratigraphy is the primary tool used by sedimentologists to predict bed-scale flow properties of both marine carbonate reservoirs (associated with carbon sequestration and hydrocarbon recovery) and groundwater aquifer systems. Coastal carbonate sequence stratigraphic models have been predicated upon the existence of parasequences, shallowing-upward successions bounded by marine flooding surfaces. Transgressive deposits in such models have been assumed to be mostly absent, whereas regressive deposits are presumed to form through the successive basinward stepping of shoals and their associated lagoons over open platforms. A review of modern coastal systems calls these assumptions into question. Transgressive deposits are substantive. In particular, in situ lagoonal and tidal-flat deposits left behind by overriding landward-migrating barriers are common across Holocene carbonate platforms. Furthermore, regressive deposits are not represented by prograding shoals and lagoons, but by lagoonal abandonment, and grainy shoreface progradation capped by strandplains, with overlying accommodation restricted to swales where only thin, discontinuous, intertidal mud flats form. We present a novel sequence-stratigraphic model based on these modern-systems observations with significant implications for subsurface geobody connectivity and fluid-flow prediction.

John M. Rivers

Robert W. Dalrymple

The reconstruction of coastal carbonate sequence stratigraphy: A modern-systems approach

海岸碳酸盐岩层序地层重建：现代系统方法

A genetic relationship between banded iron formations (BIFs) and flood basalts has long been assumed based on their close temporal and spatial association. However, proving causation has remained difficult given the absence of geochemical evidence, leading some authors to speculate that BIFs are not primary deposits. In this study, we examined the entire lithological succession of the western Iron Ore Group from the Singhbhum craton, which includes Earth’s largest, economic-grade BIF of Paleoarchean age. We show the Lower Lava flood basalts to plot on a Sm-Nd isochron with the conformably overlying Lower Shale, suggesting a 3.42 ± 0.10 Ga depositional model age for this iron-rich (average 18.26 Fe2O3 wt%, n = 7) clastic unit, implying it may be a precursor to the conformably overlying 3.39 ± 0.02 Ga BIF. This is the first occurrence of flood basalts being genetically linked to ferruginous shale on a Sm-Nd isochron and may support the hypothesis BIFs are products of secondary replacements of ferruginous clastic precursors. We assign a volcanogenic origin to this Algoma-type BIF and suggest its abnormally large size is related to the unroofing and weathering of the Lower Lava flood basalts during a major crustal formation event.

Jordan K. Wright

Asish R. Basu

Yogmaya Shukla

Flood basalt origin for Earth’s largest Paleoarchean banded iron formation

地球最大古元古代条带状铁建造的洪水玄武岩起源

We present new zircon U-Pb and (U-Th)/He data from sandstone cobbles of the Paleocene−Eocene Wasatch Formation of northern Utah (western United States). Provenance data demonstrate that these zircons have been recycled through at least two sedimentary cycles, deposited first as sand grains in the Pennsylvanian−Permian Weber Sandstone and second as sandstone cobbles in the Wasatch Formation. The thermal history of these grains requires rapid Late Mississippian−Pennsylvanian cooling, preserving a new, distant record of early Alleghanian orogenesis that is also a distinct provenance signature. Zircon thermochronology provides a powerful archive of ancient exhumation patterns and continental-scale sediment transport and deposition. Our study demonstrates that such thermal histories are resilient throughout multiple episodes of recycling.

Andrea L. Stevens Goddard

Sophie R. Black

Elizabeth A. Balgord

Zachary W. Anderson

Ryan J. Leary

Olivia G. Thurston

W. Adolph Yonkee

Detrital thermochronology histories preserved in Paleogene strata of Utah (USA) provide distant records of Paleozoic Alleghanian orogenesis and sediment dispersal

犹他州（美国）古近纪地层中保存的碎屑热年代学历史提供了远古阿勒格尼造山运动和沉积物分散的记录

短名	Geol
Journal Impact	4.90
国际分区	GEOLOGY(Q1)
期刊索引	SCI Q1中科院 1 区

ISSN	0091-7613, 1943-2682
h-index	247
国内分区	地球科学(1区)地球科学地质学(1区)
Top 期刊	是

涉及主题	地质学生物古生物学地球化学地震学物理地貌学地理构造学工程类海洋学构造盆地化学材料科学生态学历史
出版信息	出版商: Geological Society of America，出版周期: Monthly，期刊类型: journal，开源期刊: 否
基本数据	创刊年份: 1973，原创研究文献占比: 100.00%，自引率:2.10%， Gold OA占比: 37.44%
平均审稿周期	网友分享经验：平均3.0个月
平均录用比例	网友分享经验：很难

Geology

期刊引文格式

有 1 位以上作者的期刊

有 2 位作者的期刊

有 3 位作者的期刊

有 5 位以上作者的期刊

书籍引用格式

学位论文引用格式

网页引用格式

专利引用格式

手工熬夜修改参考文献？研飞自动匹配期刊，一键轻松成稿，支持 Word/WPS

投稿经验分享