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Review of Late Jurassic-early Miocene sedimentation and plate-tectonic evolution of northern California:illuminating example of an accretionary margin

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Chinese Journal Of geochemistry 2015年第2期34卷 123-142页

作者： w.g.ernst Department of geological & Environmental Sciences Stanford University

Production of voluminous igneous arc rocks,high-pressure/low-temperature(HP/LT) metamafic rocks,westward relative migration of the Klamath Mountains province,and U-Pb ages of deposition,sediment sources,and spatial locations of Jurassic and younger,detrital zirconbearing clastic rocks constrain geologic development of the northern California continental edge as follows:(1) At~ 175 Ma,transpressive plate underflow began to generate an Andean-type Klamath-Sierran arc along the margin.(2)Oceanic crustal rocks were metamorphosed under HP/LT conditions in an inboard,east-inclined subduction zone from~ 170-155 *** for the Red Ant blueschists,such Ethologies remained stored at depth;most HP/LT mafic tectonic blocks returned surfaceward only during mid- and Late Cretaceous time,chiefly entrained in circulating,buoyant Franciscan mud-matrix melange.(3) By ~ 165 Ma and continuing to ~ 150-140 Ma,erosion supplied volcanogenic debris to proximal Mariposa-galice ± Myrtle overlap strata.(4) At ~ 140,immediately prior to the onset of paired Franciscan and great Valley group(gVg) +Hornbrook deposition,the Klamath salient was deformed and displaced ~ 100-150 km westward relative to the Sierran arc,stranding pre-existing oceanic crust on the south as the Coast Range Ophiolite(CRO).(5) After the end-ofJurassic seaward step-out of the Farallon-North American convergent plate junction,terrigineous debris began to be deposited in the outboard Franciscan trench and intervening great Valley forearc.(6) Voluminous sedimentation and accretion of Franciscan Eastern + Central belts and gVg detritus took place during paroxysmal igneous activity and rapid,nearly orthogonal plate convergence at^125-80 Ma.(7) Sierran arc volcanism-plutonism ceased by^80 Ma in northern California,signaling a transition to shallow,nearly subhorizontal eastward plate underflow attending Laramide orogeny far to the east.(8) Presently exposed Paleogenelower Miocene Franciscan Coastal Belt sedimentary strata were

关键词：板块构造早中新世加利福尼亚州晚侏罗世增生保证金 U-Pb年龄地层沉积

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Petrochemical Comparison of 3.5 ga Old Mafic Amphibolite Inclusions from Eastern Hebei Province with Archean Mafic-ultramafic Supracrustais of Uncertain Antiquity,Southern Jilin Eastern Liaoning Provinces,China

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Chinese Journal Of geochemistry 1989年第2期8卷 97-111页

作者： w.g.ernst Institute of geophysics and Planetary Physics Department of Earth and Space Sciences University of California Los Angeles California 90024-1567

New major element data for coexisting minerals and bulk-rock REE analyses,combined with previously obtained petrologic/geologic information,allow comparison of Archean mafic-ultramafic meta-igneous rocks from adjacent portions of northeastern Sino-Korean shield .Isotope data published by previous workers document an Early Archean age of formation for metabasaltic rocks now occurring as mafic amphibolite inclusions in tonalitic gneisses west of Bohai Bay(area).Mafic-ultramafic mineral assemblages developed in tonalitic gneisses west of Bohai Bay(areaA).Mafic-ultramafic mineral assemblages developed in amphibolite facies Archean supracrustals east of Bohai Bay(areaB)are chemically similar ,but pre-existing phase associations have been overprinted by the effects of several later metamorphic ***0peridotitic area B protoliths appear to be more magnesian ,averaging-12wt.%MgO(versus-7wt.%for area A),and are slightly less fractionated in REE concentrations relative to chondrites(La-Lu=30-8X versus 37-14X for area A),thus perhaps being more mantle-like than area A metabasaltic *** basaltic-komatiitic series east of Bohai Bay probably represents the most ancient crust of that region,being invaded by Archean tonalities,which were subsequently converted to *** observations are compatible with the hypothesis that ,similar to area A metabasaltic rocks now found as amphibolitic inclusions in orthogneisses,are B mafic supracrustals were formed during Early of Middle Archean time ,prior to widespread isofacial amphibolite facies metamorphism(600-700℃,5-7kb,low αH2O).

关键词：岩石化学辽宁河北闪岩包裹体太古代铁镁质超基性岩地质构造

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High-pressure/low-temperature Metamorphism in Northern Hubei Province,Central China

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资源环境与工程 2016年第B4期30卷 89-104页

作者： g.Zhou Y.J.Liu E.A.Eide J.g.Liou w.g.ernst Hubei Bureau of geology and Mineral Resources Wuhan Hubei 430022 Department of geology Stanford UniversityStanford California 94305

The Qinling-Dabie accretionary fold belt in east-central China represents the E-w trending suture zone between the Sino-Korean and Yangtze cratons. A portion of the accretionary complex exposed in northern Hubei Province contains a high-pressure / low-temperature metamorphic sequence progressively metamorphosed from the blueschist through greenschist to epidote-amphibolite / eclogite facies. The Hongan metamorphic belt can be divided into three metamorphic zones,based on progressive changes in mineral assemblages: Zone Ⅰ,in the south,is characterized by transitional blueschist-greenschist facies; ZoneⅡis characterized by greenschist facies; ZoneⅢ,in the northern most portion of the belt,is characterized by eclogite and epidote-amphibolite facies sequences. Changes in amphibole compositions from south to north as well as the appearance of increasingly higher pressure mineral assemblages toward the north document differences in metamorphic P-T conditions during formation of this belt. Preliminary P-T estimates for Zone I metamorphism are 5 ~ 7 kbar,350 ~ 450℃; estimates for Zone III eclogites are 10 ~ 22 kbar,500 ±50℃. The petrographic,chemical and structural characteristics of this metamorphic belt indicate its evolutionin a northward-dipping subduction zone and subsequent uplift prior to and during the final collisionbetween the Sino-Korean and Yangtze cratons.

关键词： central China eclogite high-P/T belt transitional blueschist-greenschist

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台湾的造山作用与变质作用

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海洋石油 1984年第2期 8-17+37页

作者： w.g.ernst 陈颐亨

台湾的主要部分是由晚古生代一中生代的基底杂岩及不整合上覆的新生代盖层组成的;此岩域沿台湾岛东侧的纵谷与海岸山脉(晚第三纪吕宋火山弧和吕宋海槽弧前盆地的北廷部分)斜接。一次大的热动力变动(造成大南澳片岩岩域)中断了晚古生代... 详细信息

台湾的主要部分是由晚古生代一中生代的基底杂岩及不整合上覆的新生代盖层组成的;此岩域沿台湾岛东侧的纵谷与海岸山脉(晚第三纪吕宋火山弧和吕宋海槽弧前盆地的北廷部分)斜接。一次大的热动力变动(造成大南澳片岩岩域)中断了晚古生代和中生代沿亚洲东部裂陷边缘的冒地槽型砂岩、页岩、灰岩和玄武岩夹层的堆积。此杂岩由西面的太鲁阁带和被推测断层分开的东面的玉里带组成。太鲁阁带北部有闪岩组合出现外,均以黑云母带绿片岩相组合为特征,并伴有S型花岗岩侵位。玉里带缺乏大理岩层和花岗岩侵入体,却含很少的蛇纹岩及绿帘石闪岩和冻兰闪石闪岩的构造透镜体。此晚中生代的大南澳杂岩显然是由亚洲边缘之下的俯冲作用造成的。玉里带的镁铁质构造块体显示出部分地转变成含兰闪石组合;放射性测量的视年龄为8—14百万年。继早第三纪重新发生裂陷和海底扩张之后,沉积了新生代盖层。该盖层多半由覆盖着亚洲大陆边缘的沉积层(加玄武岩)及向海在南中国海中堆积的陆坡沉积组成。而在与逼近的吕宋弧相邻的地带则形成了加积楔,标志着菲律宾海板块无俯冲的西缘。在上新世—更新世海岸山脉与中国硅铝壳碰撞期间,新生代的陆坡单元曾发生叠瓦作用并向西逆冲;在此加载期间压力与温度的增大明显地造成了基底和被动边缘沉积盖层的重结晶。变质作用由西部山麓的成岩相和沸石相到底岩域变为上部绿片岩相。对比之下,分布于纵谷以东的外来岩域却看来实际上并未变质。可是,在海岸山脉不变质的滑乱层沉积中呈碎屑和滑块出现的台东蛇绿岩,却受到了早中新世(?)阳起石角页岩相洋脊重结晶作用的影响,并带有晚中新世—早上新世洋底沸石化的烙印。因而,台湾的造山运动至少包括两个主要的会聚幕:(1)晚中生代古大平洋岩石圈板块向西下潜,造成成对的高温和高压带;(2)紧接着8—14百万年前的隐蔽俯冲事件之后,在南中国海岩石圈向东下降到菲律宾海板块之下期间,有一个上新世—更新世的碰撞事件,它造成了一套成岩到低级变质的层序。一个外侧钙—硷质火山弧的影响进一步使情况更趋复杂。由该年轻造山区的共生次序所显示出的时—空关系表明变质作用和造山过程是错综复杂的。

关键词：晚第三纪海岸山脉变质作用地质作用前新生代造山运动地壳运动造山作用台湾

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根据蓝片岩的退变质压力-温度轨迹推测俯冲带的构造历史

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地质科学译丛 1990年第1期7卷 21-24页

作者： w.g.ernst 张泽明

许多显生宙的会聚板块边界都以出现不连续的具有高压进变质轨迹的蓝片岩带为标志.常见的蓝片岩组合可以发生广泛的绿片岩和(或)绿帘-角闪岩组合的叠加.如西阿尔卑斯.对这种类型的高压变质带来说,退变质作用是非常快速的、近于绝热的降... 详细信息

许多显生宙的会聚板块边界都以出现不连续的具有高压进变质轨迹的蓝片岩带为标志.常见的蓝片岩组合可以发生广泛的绿片岩和(或)绿帘-角闪岩组合的叠加.如西阿尔卑斯.对这种类型的高压变质带来说,退变质作用是非常快速的、近于绝热的降压作用;其中某些地体在降压的早期还经历了连续加热。抬升作用很可能是由于岛弧、大洋高原或陆壳碎块进入了俯冲带(碰撞带),俯冲速度骤降或停止,并由此导致受阻的重结晶俯冲杂岩在浮力的作用下近于绝热上升的结果.另一种类型的高压变质带,如加利福尼亚西部的弗朗西斯科带,保存有变质的文石,没有低压组合的叠加。退变质作用几乎就是沿进变质p-T轨迹回返.或对于原来的高变质级岩块而言,其退变质甚至可以出现于更高的p/T比率下。很显然,部分这种类型的变质带应是在板块连续俯冲和冷却作用进行过程中,受均衡作用的驱使沿俯冲带缓慢抬升的.其上升运动是以构造叠瓦岩片、混杂岩中的层间回流,部分也许是以底垫增生柱的侧向扩张形式进行的.由此可见,高压变质带的退变质p-T轨迹对会聚板块的构造历史可以提供重要的约束条件。

关键词：蓝片岩压力俯冲带构造历史

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Spatial Distribution and Tectonic Evolution of Ultrahigh-P(UHP) and High-P(HP) Metamorphic Belts in Central and Eastern China

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资源环境与工程 2016年第B4期30卷 76-88页

作者： J.g.Liou w.g.ernst Xiaomin wANg Ruyuan ZHANg E.Eide Jun LIU S.Maruyama Leslie Ames gaozhi ZHOU Yuanjun LIU Stanford University Standford California 94305 Tokyo University Komaba 153 - 8902 University of California Senta Barbara 93106 Hubei Bureau geol. Mineral. Resource WuhanHubei 430022

In the Triassic suture between the Sino-Korean and Yangtze cratons,the Qinling-Dabie metamorphic complex includes three tectonic units: a northern migmatitic terrane（ P < 20 kb）,a central UHP coesite- and diamondbea... 详细信息

In the Triassic suture between the Sino-Korean and Yangtze cratons,the Qinling-Dabie metamorphic complex includes three tectonic units: a northern migmatitic terrane（ P g eclogite belt（20;40 kb）,and a southern HP blueschist-eclogite belt（5;12 kb）. Protoliths include continental basement of late Archean to Proterozoic granitic gneiss complexes,and mid-to late Proterozoic bimodal volcanics,platform carbonates,and turbidite sequences including peraluminous sediments. Some early Paleozoic rocks are included as protoliths in the HP belt. The metamorphic complex is segmented into several large blocks by NE-Sw trending faults. Three（ Dabie,Hongan and wudan） occur in central China,and an eastern extension,the Su-Lu block is displaced to the north by the Tanlu fault. The UHP rocks are best exposed in the Dabie and Su-Lu blocks,whereas HP blueschists occur throughout the Hongan and wudan blocks. widespread occurrence of conjugate faults in the metamorphic complex suggests differential doming after tectonic juxtaposition of the UHP and HP units at shallow crustal levels. Eclogites of the UHP belt occur as blocks in ultramafic rocks,marble and gneiss and as thin layers interbedded with gneiss; some contain coesite and coesite pseudomorphs in garnet,omphacite,kyanite and epidote. Microdiamond inclusions in garnet have been reported. C-type glaucophane-bearing eclogites are restricted to the Hongan HP belt and contain paragonite instead of kyanite. The coherent HP terrane displays progressive zonation from transitional blueschist / greenschist,through greenschist and epidote amphibolite to eclogite assemblages. The UHP and HP belts possess similar metamorphic trends,deformation features and record clockwise P-T paths. Disposition of the UHP belt to the north of the HP belt,the northward increase in metamorphic grade,and the southward vergence of structures suggest formation during northward underflow of a microcontinent beneath the

关键词： UHP Spatial Distribution and Tectonic Evolution of Ultrahigh-P and High-P HP Metamorphic Belts in Central and Eastern China

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透闪石50-契尔马克分子50+过剩H2O体系压力到10kbar的实验研究

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地球与环境 1988年第8期 52-59+38页

作者：曹荣龙 ,C.Ross ,w.g.ernst ,曲木

对总成分为镁角闪石（2CaO·4MgO·Al2O3·7SiO2）+过剩H2O的体系进行了压力到10kbar的相平衡研究。角闪石稳定的下限温度当1000bar时为519℃,2000 bar时为541℃,10kbar时为718℃。低于下限温度不出现角闪石,体系由低温组合:an+chl+di+t... 详细信息

对总成分为镁角闪石（2CaO·4MgO·Al2O3·7SiO2）+过剩H2O的体系进行了压力到10kbar的相平衡研究。角闪石稳定的下限温度当1000bar时为519℃,2000 bar时为541℃,10kbar时为718℃。低于下限温度不出现角闪石,体系由低温组合:an+chl+di+tc（+f）所组成,除an外少量的铝这时主要进入di和tc中,相邻的高温平衡组合为;amph+an+chl+f,在1000—3000bar较低的压力下,角闪石中铝的固溶量甚低,固体溶液的范围从几乎纯的透闪石到大约cu11tr96ts20,这与绝大多数天然镁角闪石的成分一致。10kbar流体压力下固溶体成分约到cu（08）tr（53）ts41。含铝tr+fo的高温上限温度大体上在化学计量透闪石的脱水曲线以下约20—25℃。含水熔体当10kbar时见于900℃,熔体与角闪石共存的持续温度区间超过60℃。有关实验结果说明了天然界tr和ts之间（?）溶体限于（tr100—70）严格成分范围的原因。

关键词：角闪石固溶体链状硅酸盐矿物 H2O 总成分电子探针微量分析微探针分析电子探针分析辉石化学计量单斜闪石韭闪石流体压力化学组成化学成分人工合成热力学平衡相平衡马克分子实验研究

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Origins of perturbations in dayside equatorial ground magnetograms

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Earth and Planetary Physics 2024年第1期8卷 215-221页

作者： Syau-Yun w.Hsieh David g.Sibeck The Johns Hopkins University Applied Physics Laboratory LaurelMarylandUSA NASA goddard Space Flight Center GreenbeltMarylandUSA

To determine the cause(s)of perturbations seen in dayside equatorial ground magnetograms,we conducted a systematic survey of simultaneous ground-based and geosynchronous satellite-based observations during the 90-day period from December 1,2020 to February 28,*** examined Huancayo ground magnetometer observations from 14:00:00 to 20:00:00 UT each day,during which Huancayo passed through local *** those data we chose perturbation events selected on the basis of large(>20 nT)event amplitude and classified the selected events as responding primarily to solar wind pressure,or to variations in the north/south component of the interplanetary magnetic field(IMF Bz),or perhaps in part to *** results show that an equivalent number of events were identified for each model during this 90-day *** in the lagged solar wind dynamic pressure routinely correspond to nearly simultaneous sudden impulses recorded at both geosynchronous orbit and on the *** in IMF Bz produce erosion signatures at geosynchronous orbit and can correspond to ground events if lag times for reconnection to enhance convection in the magnetosphere are taken into account.

关键词： dayside magnetosphere dayside equatorial ionosphere geosynchronous magnetic field

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Tumor necrosis factor-alpha, transforming growth factor-beta, degree of lower urinary tract symptoms as predictors of erectile dysfunction in benign prostatic hyperplasia patients

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Asian Journal of Urology 2024年第2期11卷 280-285页

作者： gede w.K.Duarsa Yeremia g.Kusumah Ronald Sugianto Pande M.w.Tirtayasa Tjokorda g.B.Mahadewa Department of Urology Faculty of MedicineUniversitas UdayanaProf.Dr.I.G.N.G Ngoerah General HospitalBaliIndonesia Department of general Surgery Faculty of MedicineUniversitas UdayanaProf.Dr.I.G.N.G Ngoerah General HospitalBaliIndonesia Medical Doctor Study Program Faculty of MedicineUniversitas UdayanaBaliIndonesia Department of Urology Faculty of MedicineUniversitas UdayanaUniversitas Udayana Teaching HospitalBaliIndonesia Department of Neurosurgery Faculty of MedicineUniversitas UdayanaProf.Dr.I.G.N.G Ngoerah General HospitalBaliIndonesia

Objective: Erectile dysfunction (ED) is a condition of insufficient penile erection, consistently or recurrently, for sexual activity. Tumor necrosis factor-alpha (TNF-α) induces transforming growth factor-beta (TgF-β), which causes the transition of epithelial cells into mesenchymal cells that affect ED. This study aimed to evaluate the roles of TNF-α, TgF-β, degree of lower urinary tract symptoms, and prostatic volume for the presence of ED in benign prostatic hyperplasia (BPH) ***: Our study performed an analytic observational retrospective cohort study using secondary data from four hospitals in Bali, Indonesia, including medical records and other administrative data. The sample was BPH patients with several history ***: Our sample was 83 respondents, ranging from 50 years to 80 years, 61 respondents with ED and 22 with non-ED. The International Prostate Symptom Score showed a significant result, which indicates that ED is more common in patients with higher International Prostate Symptom Score (p=0.002). Moreover, the TNF-α of ≥43.9 pg/mg and TgF-β of ≥175.8 pg/mL were significantly associated with the presence of ED in BPH patients (pgnificant with ED (p=0.947).Conclusion: TNF-α, TgF-β, and lower urinary tract symptoms severity can predict the occurrence of ED in BPH, while prostatic volume was not significant.

关键词： Prostate enlargement Biomarker Erectiledysfunction Riskfactor

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Perturbations in the earthworm metabolite profile during a two-week exposure to metformin

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Emerging Contaminants 2024年第3期10卷 221-229页

作者： J.D.gillis g.w.Price S.O.Prasher Department of Bioresource Engineering McGill UniversityFaculty of Agricultural and Environmental SciencesMacdonald-Stewart Building MS1-02721111 Lakeshore RoadSainte-Anne-de-BellevueQuebecH9X 3V9Canada Department of Engineering Dalhousie UniversityFaculty of Agriculture39 Cox RoadPO Box 550TruroNova ScotiaB2N 5E3Canada

Metformin is among the most prescribed pharmaceuticals in many countries,and as a result has shown up in biosolids derived from municipal wastewater treatment that are destined for land *** humans taking metformin,the effects include reduced glucose uptake in the intestine,a reduction in gluconeogenesis,increased oxidation of fatty acids,and reduced fatty acid *** effects of metformin on soil-dwelling organisms are not well *** study tested the effects of metformin exposure(0,10,40,160,640μg g^(-1))on the earthworm(***)at four time points(6 h,2 d,7 d,and 14 d)using gC-MS to reveal sub-lethal effects and elucidate potential modes of action for *** were no mortalities observed,and earthworms exposed to the highest concentrations(160 and 640μg g^(-1))gained weight relative to the control on days 7 and *** reductions on day 7 were observed for glucose and malic acid(consistent with a reduction in gluconeogenesis),and for palmitic and margaric acid(consistent with increased oxidation and reduced synthesis of fatty acids).Lactic acid ranked first and second among canonicals 1 and 2 respectively and led to significant differences in discriminant scores across concentration and *** levels increased to equal or greater than the control on day 14,likely caused by reduced exposure as metformin is reported to be readily transformed by microorganisms under aerobic *** observations were consistent with the known effects of metformin in humans,and suggests that a similar mode of action exists in earthworms.

关键词： Metabolites Toxicity Earthworms Metformin gC-MS

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