发布求助
文献互助 智能选刊 最新文献

Terra Nova最新文献

筛选
英文 中文
Rainfall‐induced ground deformation in southern Africa 南部非洲降雨引起的地面变形
IF 2.4 3区 地球科学
Terra Nova Pub Date : 2023-04-04 DOI: 10.1111/ter.12650
O. Dauteuil, M. Jolivet, Louis Gaudaré, Anne-Morwenn Pastier
{"title":"Rainfall‐induced ground deformation in southern Africa","authors":"O. Dauteuil, M. Jolivet, Louis Gaudaré, Anne-Morwenn Pastier","doi":"10.1111/ter.12650","DOIUrl":"https://doi.org/10.1111/ter.12650","url":null,"abstract":"We present an analysis of ground deformation induced by large‐scale seasonal rainfall in Southern Africa, based on GPS and GRACE time series and on simulations of elastic flexural response to hydrological loading. This large‐scale study including South Zambia, South Angola, North Namibia and North Botswana displays a latitudinal precipitation gradient between tropical to semi‐arid conditions. GRACE data display annual variations in water mass decreasing drastically southwards. GPS time series of three permanent stations located in Zambia, Namibia and Botswana show seasonal synchronous vertical displacements with amplitude decreasing southwards from 4 to 2 cm, with a shift of 2–3 months from the main rainfall season. Flexure simulations integrating rainfall, evapotranspiration, water storage, flood migration and river output produce a ground flexure up to 6 cm with timing in agreement with the GPS time series. It highlights the hydrological buffering of surface aquifer located in the Kalahari sands.","PeriodicalId":22260,"journal":{"name":"Terra Nova","volume":"35 1","pages":"260 - 266"},"PeriodicalIF":2.4,"publicationDate":"2023-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44815926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Triassic in the northernmost Atlantic—Linking North Greenland and the southwestern Barents Sea 大西洋最北端的三叠纪——连接北格陵兰岛和巴伦支海西南部
IF 2.4 3区 地球科学
Terra Nova Pub Date : 2023-04-03 DOI: 10.1111/ter.12649
M. Bjerager, P. Alsen, J. Bojesen‐Koefoed, M. Fyhn, J. Hovikoski, Nynke Keulen, S. Lindström, J. Therkelsen, T. Thomsen
{"title":"Triassic in the northernmost Atlantic—Linking North Greenland and the southwestern Barents Sea","authors":"M. Bjerager, P. Alsen, J. Bojesen‐Koefoed, M. Fyhn, J. Hovikoski, Nynke Keulen, S. Lindström, J. Therkelsen, T. Thomsen","doi":"10.1111/ter.12649","DOIUrl":"https://doi.org/10.1111/ter.12649","url":null,"abstract":"The Wandel Sea Basin in North Greenland was part of the epicontinental Boreal Sea in Triassic time. The basin formed the western margin of the northernmost Atlantic elongated sea connecting southwards with basins along the conjugate Greenland—Norwegian margins. A multidisciplinary dataset including sedimentology, biostratigraphy, organic geochemistry and sedimentary provenance, allow to document its basin evolution. The Wandel Sea Basin was transgressed in the Dienerian with marine deposition prevailing until the Norian. Sediments were mainly sourced from the Greenlandic Caledonian basement and deposited on a 100 km wide shallow marine shelf during the Early Triassic. In Middle Triassic, oil‐prone mudstones formed in oxygen‐depleted deep shelf settings, including eastern Wandel Sea Basin. Detrital zircon U–Pb ages show that by Carnian times, the >1000 km wide, Uralian‐sourced, deltaic shelf had prograded westward across the Barents Sea reaching the eastern north Greenland and de facto nearly closed the northernmost Atlantic Sea.","PeriodicalId":22260,"journal":{"name":"Terra Nova","volume":"35 1","pages":"250 - 259"},"PeriodicalIF":2.4,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45141494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Constraining the diagenesis of the Puga cap carbonate from U–Pb in‐situ dating of seafloor crystal fans, southern Amazonian craton, Brazil 巴西亚马逊克拉通南部海底结晶扇的U–Pb原位测年限制Puga盖层碳酸盐岩的成岩作用
IF 2.4 3区 地球科学
Terra Nova Pub Date : 2023-03-24 DOI: 10.1111/ter.12652
Davi F. Carvalho, A. Nogueira, M. Macambira, C. Lana, R. F. Santos, Julia Guélard, P. Sansjofre
{"title":"Constraining the diagenesis of the Puga cap carbonate from U–Pb in‐situ dating of seafloor crystal fans, southern Amazonian craton, Brazil","authors":"Davi F. Carvalho, A. Nogueira, M. Macambira, C. Lana, R. F. Santos, Julia Guélard, P. Sansjofre","doi":"10.1111/ter.12652","DOIUrl":"https://doi.org/10.1111/ter.12652","url":null,"abstract":"Cap carbonates overlying Marinoan (635 Ma) glacial deposits worldwide record extreme paleoceanographic changes that may have triggered the rise of macroscopic life. However, the lack of geochronological constraints on these successions hinders reconciling climate and environmental change. Their upper part is marked by anomalous aragonite precipitation associated with large transgression and oxygenation of the post‐glacial ocean. Neomorphism of these deposits to low‐Mg calcite often includes centimetre‐scale seafloor crystal fans. We used in‐situ U–Pb dating and C and Sr isotopic analyses in the Puga cap carbonate to estimate the nature and timing of the neomorphism process. An age of 623 ± 3 [9] Ma (δ13C ~ −6‰ and 87Sr/87Sr ~ 0.7071–0.7075) for a blocky calcite cement is consistent with solution‐reprecipitation within the fans during final filling and diagenetic stabilization of the cap carbonate fabric. This result improves previous cap carbonate direct dating, providing a rare Lower Ediacaran chronostratigraphic reference.","PeriodicalId":22260,"journal":{"name":"Terra Nova","volume":"35 1","pages":"276 - 284"},"PeriodicalIF":2.4,"publicationDate":"2023-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48516352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Interdependence between bacterial EPS and early grain coat development 细菌EPS与早期种皮发育的相关性
IF 2.4 3区 地球科学
Terra Nova Pub Date : 2023-03-15 DOI: 10.1111/ter.12648
Dimitrios Charlaftis, S. Jones, Lars Grimm, A. Kappler
{"title":"Interdependence between bacterial EPS and early grain coat development","authors":"Dimitrios Charlaftis, S. Jones, Lars Grimm, A. Kappler","doi":"10.1111/ter.12648","DOIUrl":"https://doi.org/10.1111/ter.12648","url":null,"abstract":"Bacteria are the most abundant forms of life we know on our planet, able to survive in a variety of habitats, that play an important role in mineral formation and transformation processes. Here, we present laboratory experiments in which unconsolidated quartz grains were seeded with Geobacter sulfurreducens cells and exposed to a mineral medium solution for 96 hours at temperatures of between 60°C and 120°C. Experimental data show the interdependence between extracellular polymeric substances (EPS) and the early formation of grain‐coating material. The occurrence of EPS promotes the development of web and bridging structures binding the quartz grains and creating EPS‐coated surfaces. With increasing temperature, an amorphous mineral phase grows preferentially on these surfaces suggesting that EPS can act as a template for mineral nucleation. At temperatures >100°C, the order of crystallinity of the amorphous authigenic phase increases, transitioning to poorly‐ordered rosette‐like textures.","PeriodicalId":22260,"journal":{"name":"Terra Nova","volume":"35 1","pages":"241 - 249"},"PeriodicalIF":2.4,"publicationDate":"2023-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48639436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Earthquake Early Warning System (EEWS) empowered by Time‐Dependent Neo‐Deterministic Seismic Hazard Assessment (TD‐NDSHA) 基于时变新确定性地震危险性评估(TD - NDSHA)的地震预警系统(EEWS)
IF 2.4 3区 地球科学
Terra Nova Pub Date : 2023-03-03 DOI: 10.1111/ter.12647
Yan Zhang, Zhongliang Wu, F. Romanelli, F. Vaccari, A. Peresan, Jiawei Li, G. Panza
{"title":"Earthquake Early Warning System (EEWS) empowered by Time‐Dependent Neo‐Deterministic Seismic Hazard Assessment (TD‐NDSHA)","authors":"Yan Zhang, Zhongliang Wu, F. Romanelli, F. Vaccari, A. Peresan, Jiawei Li, G. Panza","doi":"10.1111/ter.12647","DOIUrl":"https://doi.org/10.1111/ter.12647","url":null,"abstract":"In the network‐based on‐site earthquake early warning system (EEWS), the ‘blind zone’, namely the zone where the issued warning arrives later than the destructive S and surface waves, is one of the challenges affecting its effectiveness. The ‘blind zone’ is determined by the interstation distance, or equivalently the density of seismic stations, of the network. In this paper, we suggest a practical approach according to which, when in a region a temporary increase of seismic hazard is declared, additional stations are deployed in such a way that the blind zone is temporarily reduced. In the procedure, the time‐dependent neo‐deterministic seismic hazard assessment (TD‐NDSHA) plays a vital role in the identification of the regions potentially exposed to high macroseismic intensities. As a showcase example, we consider the scenario of year 2014 at the Sichuan‐Yunnan border of southwest China. The TD‐NDSHA is based on the standard NDSHA procedure at regional scale (bedrock conditions), with the ‘controlling earthquakes’ defined on the basis of the Annual Consultation. We show that the ‘blind zone’ can be reduced in the identified areas of interest (e.g., MMI ≥ VI), by deploying a limited number of additional seismic stations. In the case where false alarms can be tolerated, significant reduction of the ‘blind zone’ can be implemented by moving from a network‐based EEWS to a single‐sensor‐based EEWS and skipping the process of location and magnitude‐determination/prediction procedures.","PeriodicalId":22260,"journal":{"name":"Terra Nova","volume":"35 1","pages":"230 - 239"},"PeriodicalIF":2.4,"publicationDate":"2023-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42518017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Miocene ductile thinning below the Folegandros Detachment System, Cyclades, Greece 希腊基克拉迪斯Folegandros拆离系统下中新世韧性减薄
IF 2.4 3区 地球科学
Terra Nova Pub Date : 2023-02-17 DOI: 10.1111/ter.12646
C. Bakowsky, D. Schneider, B. Grasemann, K. Soukis
{"title":"Miocene ductile thinning below the Folegandros Detachment System, Cyclades, Greece","authors":"C. Bakowsky, D. Schneider, B. Grasemann, K. Soukis","doi":"10.1111/ter.12646","DOIUrl":"https://doi.org/10.1111/ter.12646","url":null,"abstract":"Folegandros island lies between the established SW‐directed West Cycladic and S‐directed Santorini detachment systems. Preserving shear‐sense indicators with opposing kinematics, the geodynamics and timing of kinematics are debated. Using white mica 40Ar/39Ar geochronology complemented by structural data, we report a new Miocene top‐to‐S detachment system, the Folegandros Detachment System (FDS), that is coupled with pure‐shear flattening and juxtaposes the Cycladic Blueschist Unit below Early Cretaceous to early Eocene low‐grade marble and quartzitic‐phyllitic sequences, topped by a metaflysch. Chronostratigraphic correlation and detrital zircon geochronology reveal the low‐grade rocks from the hanging wall of the FDS likely belong to the Pelagonian Zone. Middle Miocene zircon and apatite (U‐Th)/He cooling ages correspond to the latest stages of exhumation. Observations of opposing kinematics on Sikinos, Ios and now Folegandros reveal that ductile thinning played a more significant role in accommodating Miocene exhumation of high‐pressure rocks in the southern Cyclades than previously postulated.","PeriodicalId":22260,"journal":{"name":"Terra Nova","volume":"35 1","pages":"220 - 229"},"PeriodicalIF":2.4,"publicationDate":"2023-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42982922","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Brittle basement deformation during the Caledonian Orogeny observed by K‐Ar geochronology of illite‐bearing fault gouge in west‐central Sweden 瑞典中西部伊利石断层泥K-Ar地质年代学观测到的加里东造山运动期间的脆性基底变形
IF 2.4 3区 地球科学
Terra Nova Pub Date : 2023-02-15 DOI: 10.1111/ter.12645
B. Almqvist, R. Lelij, K. Högdahl, R. Lescoutre, J. Schönenberger, H. Fossen, H. Sjöström, C. Juhlin, S. Luth, S. Grigull, G. Viola
{"title":"Brittle basement deformation during the Caledonian Orogeny observed by K‐Ar geochronology of illite‐bearing fault gouge in west‐central Sweden","authors":"B. Almqvist, R. Lelij, K. Högdahl, R. Lescoutre, J. Schönenberger, H. Fossen, H. Sjöström, C. Juhlin, S. Luth, S. Grigull, G. Viola","doi":"10.1111/ter.12645","DOIUrl":"https://doi.org/10.1111/ter.12645","url":null,"abstract":"This study presents K‐Ar ages of illite‐bearing fault gouges in crystalline basement in central‐western Sweden. Samples were taken from two faults that localized brittle deformation marginal to and within mafic dikes that intruded Paleoproterozoic granitoids. K‐Ar ages from 10 separated grain fractions span from 823 to 392 Ma. Older ages obtained (823–477 Ma) were influenced by a mixture of illite and K‐feldspar; the latter likely formed during a hydrothermal event prior to faulting. The remaining ages (442.1 ± 9.7 to 391.7 ± 6.1 Ma) were obtained from fractions from both faults hosting only authigenic illite and show that illite crystallized during the Scandian phase of the Caledonian orogeny. These results indicate that previously presumed autochthonous Caledonian basement was involved in continental contraction and subsequent collapse of the Caledonian orogen, influencing both the mode and depth of penetration of deformation into Baltica.","PeriodicalId":22260,"journal":{"name":"Terra Nova","volume":"35 1","pages":"213 - 219"},"PeriodicalIF":2.4,"publicationDate":"2023-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44874300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Detrital zircon age signatures of the Mesozoic in the Lusitanian Basin and implications for the evolution of Iberia–Newfoundland conjugate margins 卢西塔尼亚盆地中生代碎屑锆石年龄特征及其对伊比利亚-纽芬兰共轭边缘演化的影响
IF 2.4 3区 地球科学
Terra Nova Pub Date : 2023-01-27 DOI: 10.1111/ter.12644
P. Dinis, P. Vermesch, P. Callapez
{"title":"Detrital zircon age signatures of the Mesozoic in the Lusitanian Basin and implications for the evolution of Iberia–Newfoundland conjugate margins","authors":"P. Dinis, P. Vermesch, P. Callapez","doi":"10.1111/ter.12644","DOIUrl":"https://doi.org/10.1111/ter.12644","url":null,"abstract":"New detrital zircon age results from the Lusitanian Basin are integrated with published data for the Mesozoic of west Iberia and eastern Canada (4959 concordant ages). Zircons in new samples are either mainly Devonian‐Permian, Cryogenian‐Ediacaran or reveal a combination of these two age populations, showing secondary to minor Mesoproterozoic‐Archean ages. Statistical tools applied to the compiled age data allow grouping the samples according to age signatures and explain main features of the age spectra. Age signatures are determined by the abundance of zircon: (1) recycled from terranes involved in Pangea amalgamation; (2) associated with Acadian‐Variscan crystalline rocks (~420–310 Ma), which becomes younger from the Laurentian to the Gondwanan sides of the orogen; (3) associated with post‐collisional events (~300–285 Ma) that affected different terranes and were exhumed in major structures controlling basin formation; and (4) resulting from Mesozoic magmatism (~145 Ma) with a stronger imprint in the west Atlantic margin.","PeriodicalId":22260,"journal":{"name":"Terra Nova","volume":"35 1","pages":"203 - 212"},"PeriodicalIF":2.4,"publicationDate":"2023-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42212461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Accretionary orogenesis triggered by collision across continent distance: Evidence from the Proto‐Tethyan West Kunlun, China 跨大陆距离碰撞引发的增生造山作用:来自原特提斯西昆仑的证据
IF 2.4 3区 地球科学
Terra Nova Pub Date : 2023-01-10 DOI: 10.1111/ter.12643
Yan-Jun Wang, Weiguang Zhu, Zhenghong Zhang, Kang Yang, Chengquan Wu, Jinhong Xu, Chengbiao Leng, Jian‐Bing Xu
{"title":"Accretionary orogenesis triggered by collision across continent distance: Evidence from the Proto‐Tethyan West Kunlun, China","authors":"Yan-Jun Wang, Weiguang Zhu, Zhenghong Zhang, Kang Yang, Chengquan Wu, Jinhong Xu, Chengbiao Leng, Jian‐Bing Xu","doi":"10.1111/ter.12643","DOIUrl":"https://doi.org/10.1111/ter.12643","url":null,"abstract":"Proto‐Tethyan orogenic processes prior to the late Ordovician collision remain unclear. Both whole‐rock La/Yb‐ and zircon Eu/Eu*‐based crustal thickness proxies along with petrological and geological observations were used to reconstruct mountain‐building history for the West Kunlun orogenic belt, China, over the span of Early Palaeozoic. Here, we demonstrate that Proto‐Tethyan West Kunlun crust has observed significant accretionary orogeneses at 520–480 Ma and 480–450 Ma and collisional orogenesis at 450–400 Ma. The 520–480 Ma accretionary orogenesis in West Kunlun together with the coeval Delamerian accretionary contractional orogenesis in eastern Australia were simultaneously induced by continent‐continent collisions that welded the Gondwana landmass. Ca. 440 Ma docking of Tarim and its eastern neighbouring blocks along the northern margin of Gondwana in turn triggered the Lachlan accretionary orogenesis along the opposite margin. This study highlights that accretionary orogenesis could be a manifestation of far‐field compressional stress from continent‐continent collision.","PeriodicalId":22260,"journal":{"name":"Terra Nova","volume":"35 1","pages":"193 - 202"},"PeriodicalIF":2.4,"publicationDate":"2023-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44124169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Issue Information 问题信息
IF 2.4 3区 地球科学
Terra Nova Pub Date : 2023-01-02 DOI: 10.1111/ter.12601
{"title":"Issue Information","authors":"","doi":"10.1111/ter.12601","DOIUrl":"https://doi.org/10.1111/ter.12601","url":null,"abstract":"","PeriodicalId":22260,"journal":{"name":"Terra Nova","volume":" ","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45201745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信