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Sediment provenance signal of the discontinuous retroarc topography in the northern Andes during the Early Cretaceous 早白垩世安第斯山脉北部不连续弧后地形的沉积物物源信号
IF 2.4 3区 地球科学
Terra Nova Pub Date : 2023-06-09 DOI: 10.1111/ter.12668
S. León, Sebastian Jimenez-Rodriguez, A. Piraquive, Sandra Florez‐Amaya, J. Muñoz-Rocha, M. L. Peña-Urueña, Amed Bonilla, Ingrid Facio Lince, D. Contreras‐Fayad, Carolina Jiménez
{"title":"Sediment provenance signal of the discontinuous retroarc topography in the northern Andes during the Early Cretaceous","authors":"S. León, Sebastian Jimenez-Rodriguez, A. Piraquive, Sandra Florez‐Amaya, J. Muñoz-Rocha, M. L. Peña-Urueña, Amed Bonilla, Ingrid Facio Lince, D. Contreras‐Fayad, Carolina Jiménez","doi":"10.1111/ter.12668","DOIUrl":"https://doi.org/10.1111/ter.12668","url":null,"abstract":"A large dataset of detrital zircon U–Pb ages (N = 5940) of Aptian‐Albian strata of the Colombian‐Ecuadorian retroarc region suggests that these rocks were sourced from Proterozoic cratonic and Permian–Triassic to Cretaceous rocks of the Andean proto‐Cordilleras. The nonconformity between Aptian‐Albian strata and Proterozoic rocks of the Garzón Massif indicates the existence of positive relief in this region. Topographic highs could have caused local basin compartmentalization and the prevalence of a localized provenance of coeval strata. Areas of positive relief were seemingly exposed to intense chemical weathering as suggested by the high Chemical Index of Alteration values, and low Rb/Sr and SiO2/Al2O3 ratios of analysed strata. Our results highlight the value of provenance analysis to study the ancient topography of retroarc systems and open the avenue for further research on the role of extensional tectonics in the topographic and basin evolution in the Andes.","PeriodicalId":22260,"journal":{"name":"Terra Nova","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48007468","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
Imaging of post‐collisional deformations on the NE Tisza continental unit using ambient seismic noise: A case study from the Țicău area, Romania 使用环境地震噪声对NE Tisza大陆单元碰撞后变形的成像：罗马尼亚Țicău地区的案例研究
IF 2.4 3区 地球科学
Terra Nova Pub Date : 2023-06-01 DOI: 10.1111/ter.12667
I. Panea, D. Draganov, Catalin-Florin Bouaru, I. Munteanu
{"title":"Imaging of post‐collisional deformations on the NE Tisza continental unit using ambient seismic noise: A case study from the Țicău area, Romania","authors":"I. Panea, D. Draganov, Catalin-Florin Bouaru, I. Munteanu","doi":"10.1111/ter.12667","DOIUrl":"https://doi.org/10.1111/ter.12667","url":null,"abstract":"The Ţicău area (NW Romania) is part of the collisional zone between the Tisza and Dacia mega‐units. Imaging of Ţicău area's subsurface geological structure will contribute to the understanding of the processes, which controlled its tectonic evolution. Analysis of outcrops provides accurate information for the building of kinematic sections used to explain the small‐scale deformations of sedimentary formations, such as those developed south of the Ţicău mountains. Imaging of large‐scale deformations requires analysis of data recorded and/or measured over a wider area. We use Seismic Interferometry by cross‐correlation on ambient noise recorded along with a line located north of the Ţicău mountains. The passive seismic section obtained after virtual body‐wave reflections processing displays folded and faulted Paleogene formations, which are in good agreement with the observations on outcrops found to the south of the Ţicău mountains. The active‐source data recorded along with the same line are too noisy for interpretation.","PeriodicalId":22260,"journal":{"name":"Terra Nova","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41756367","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
Early onset of Pyrenean collision (97–90 Ma) evidenced by U–Pb dating on calcite (Provence, SE France) 法国普罗旺斯方解石U-Pb测年证明比利牛斯山碰撞早发(97-90 Ma)
IF 2.4 3区 地球科学
Terra Nova Pub Date : 2023-05-31 DOI: 10.1111/ter.12665
Antonin Bilau, Y. Rolland, T. Dumont, S. Schwartz, N. Godeau, A. Guihou, P. Deschamps
{"title":"Early onset of Pyrenean collision (97–90 Ma) evidenced by U–Pb dating on calcite (Provence, SE France)","authors":"Antonin Bilau, Y. Rolland, T. Dumont, S. Schwartz, N. Godeau, A. Guihou, P. Deschamps","doi":"10.1111/ter.12665","DOIUrl":"https://doi.org/10.1111/ter.12665","url":null,"abstract":"Early Late Cretaceous uplift of Provence gave rise to the Durance Isthmus. In the present study, U–Pb dating on calcite of compressional structures related to Pyrenean foreland compressional deformation in Provence shows that N‐S shortening occurred coeval with emersion of the Durance Isthmus, through the development of combined top‐to‐the‐North to NW thrusts between 97 and 90 Ma. This large‐scale event, recorded from the Pyrenees to the Middle‐East regions is interpreted as a far‐field internal plate precursor of the Africa‐Europe plates reorganization. Furthermore, the change in tectonic style and amount of shortening between Provence and Pyrenees was accommodated by sinistral reactivation of the NE–SW Cevennes and Nimes faults, acting as transform boundaries in this incipient collisional context.","PeriodicalId":22260,"journal":{"name":"Terra Nova","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41941689","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
The control of collisional tectonics over valley morphology: the case of the largest glacier in the European Alps 碰撞构造对山谷形态的控制：以欧洲阿尔卑斯山最大的冰川为例
IF 2.4 3区 地球科学
Terra Nova Pub Date : 2023-05-31 DOI: 10.1111/ter.12666
Ferdinando Musso Piantelli, Sandro Truttmann, M. Herwegh
{"title":"The control of collisional tectonics over valley morphology: the case of the largest glacier in the European Alps","authors":"Ferdinando Musso Piantelli, Sandro Truttmann, M. Herwegh","doi":"10.1111/ter.12666","DOIUrl":"https://doi.org/10.1111/ter.12666","url":null,"abstract":"Understanding how bedrock properties influence the valley‐forming processes of Alpine landscapes is an outstanding challenge. A multi‐methodological approach was used to uniformly quantify fault frequency, orientation, and rock hardness of crystalline basement rocks to evaluate their impact on the erosional processes that shaped the valley of the Aletsch Glacier, Switzerland. We show how variations in fault frequency and orientations, imposed by the inherited collisional framework of the area, controls the local erodibility of the valley, affecting both hillslopes and channel erosion processes. Our results highlight how tectonic preconditioning exerts a first‐order control on the efficiency of erosion in the mountain chain, elucidating an integral link between deep‐seated collisional dynamics and surface‐based mountain shaping. Moreover, our results express the importance of a uniform, quantitative characterization of bedrock properties to comprehend the interaction and variability of erosional processes and hazards distributed within the valley systems.","PeriodicalId":22260,"journal":{"name":"Terra Nova","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43723201","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
Seismic evidence for ductile necking of the mid‐lower crust beneath the Columbrets Basin (Western Mediterranean) 哥伦布盆地（西地中海）下中下地壳韧性颈缩的地震证据
IF 2.4 3区 地球科学
Terra Nova Pub Date : 2023-05-20 DOI: 10.1111/ter.12664
A. Ramos, A. Pedrera, J. García-Senz, B. Lopez-Mir, R. Salas
{"title":"Seismic evidence for ductile necking of the mid‐lower crust beneath the Columbrets Basin (Western Mediterranean)","authors":"A. Ramos, A. Pedrera, J. García-Senz, B. Lopez-Mir, R. Salas","doi":"10.1111/ter.12664","DOIUrl":"https://doi.org/10.1111/ter.12664","url":null,"abstract":"The Columbrets Basin is the largest Mesozoic rift basin of the Valencia Trough in the Western Mediterranean. The analysis of a seismic‐reflection survey makes it possible to reconstruct the tectonic fabric underlying the sedimentary basin, including the structure of the top of the lower crust and the Moho. It is proposed that the ductile deformation of the mid‐lower crust was the main mechanism controlling the basin geometry, with the radial flow of mid‐lower crust coeval with the reactivation of two large‐offset SW‐dipping normal faults, inherited from the precursor Permian–Triassic rifting. Mid‐lower crustal necking occurred below the major depocenters, immediately before hyperextension. Our results provide new insight into the formation of circular‐shaped basins and the evolution of depth‐dependent extensional processes during rifting.","PeriodicalId":22260,"journal":{"name":"Terra Nova","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43130710","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
Dispersal of endolithic microorganisms in vesicular volcanic rock: Distribution, settlement and pathways revealed by 3D X‐ray microscopy 旧石器时代微生物在泡状火山岩中的分散：3D X射线显微镜揭示的分布、沉降和路径
IF 2.4 3区 地球科学
Terra Nova Pub Date : 2023-05-16 DOI: 10.1111/ter.12663
Hinrich A. Schmid‐Beurmann, Wolf-Achim Kahl, W. Bach, M. Ivarsson, M. Böttcher, Jörn Peckmann
{"title":"Dispersal of endolithic microorganisms in vesicular volcanic rock: Distribution, settlement and pathways revealed by 3D X‐ray microscopy","authors":"Hinrich A. Schmid‐Beurmann, Wolf-Achim Kahl, W. Bach, M. Ivarsson, M. Böttcher, Jörn Peckmann","doi":"10.1111/ter.12663","DOIUrl":"https://doi.org/10.1111/ter.12663","url":null,"abstract":"Pleistocene basanitic rocks of Vesteris Seamount in the Greenland Sea had been found to exhibit an endolithic habitat largely consisting of marine fungi that dwell within abundant vesicles, therefore representing cryptoendoliths. For the first time, we demonstrate that 3D X‐ray microscopy can unravel how microorganisms access and migrate through vesicular rock. The fossil assemblages occur within a set of vesicles connected by microcracks. Such microcracks, which are ubiquitous features in submarine volcanic rocks, enable the dispersal of marine microorganisms in the rock. This study suggests that this pathway for the colonization of marine volcanic rocks forms in consequence of early tensional stress due to variable rates of cooling of the lava flow. Subsequently, the interconnected vesicles get populated by rock‐dwelling microorganisms. This cryptoendolithic habitat exists at least since the Paleoproterozoic.","PeriodicalId":22260,"journal":{"name":"Terra Nova","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45850391","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
Paleogene–Neogene environmental evolution and the uplift‐sedimentation response of the NE Tibetan Plateau 青藏高原东北部古近系-新近系环境演化与抬升-沉积响应
IF 2.4 3区 地球科学
Terra Nova Pub Date : 2023-05-13 DOI: 10.1111/ter.12660
Jiawei Cui, Zhenhong Li, Xiaopeng Dong, Linlin Kou, Junyi Sun, Ting Huang
{"title":"Paleogene–Neogene\u0000 environmental evolution and the uplift‐sedimentation response of the\u0000 NE\u0000 Tibetan Plateau","authors":"Jiawei Cui, Zhenhong Li, Xiaopeng Dong, Linlin Kou, Junyi Sun, Ting Huang","doi":"10.1111/ter.12660","DOIUrl":"https://doi.org/10.1111/ter.12660","url":null,"abstract":"","PeriodicalId":22260,"journal":{"name":"Terra Nova","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46323998","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
Holocene slip rates and their implications for seismic hazard along the Himalayan Frontal Thrust in western Himalayan Nahan salient 喜马拉雅纳汉隆起西部喜马拉雅锋面逆冲全新世滑动率及其地震危险性意义
IF 2.4 3区 地球科学
Terra Nova Pub Date : 2023-05-12 DOI: 10.1111/ter.12657
R. K. Kaushal, S. Dey, Shantamoy Guha, N. Chauhan, Ajit Singh
{"title":"Holocene slip rates and their implications for seismic hazard along the Himalayan Frontal Thrust in western Himalayan Nahan salient","authors":"R. K. Kaushal, S. Dey, Shantamoy Guha, N. Chauhan, Ajit Singh","doi":"10.1111/ter.12657","DOIUrl":"https://doi.org/10.1111/ter.12657","url":null,"abstract":"Protracted interseismic locking of the low‐angle décollement of the Himalaya causes strain accumulation and results in growing slip deficit with time. Unlocking the frontal splay of the décollement during high‐magnitude earthquakes (Mw ≥6.5) may cause surface ruptures along the Himalayan Frontal Thrust (HFT). According to Paleoseismic investigations and observations on undeformed fluvial strath surfaces, the HFT in Nahan Salient has not experienced coseismic slip at least for the last six to seven centuries. Our new observations and chronological assessments on folded and faulted fluvial strath surfaces on the hanging wall of the HFT indicates a maximum slip rate of 10.4 ± 0.8–12.2 ± 0.8 mm/a (averaged over the last 7–8 ka). Seismic quiescence of 600–700 a results in a ~6.2–8.5 m slip deficit on the HFT which could trigger a Mw ≥7.7 earthquake. Our findings underline an enormous seismic risk prevailing in the Nahan area.","PeriodicalId":22260,"journal":{"name":"Terra Nova","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48366509","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
Active faulting in the Beagle Channel (Tierra del Fuego) 比格尔海峡(火地岛)的活动断层
IF 2.4 3区 地球科学
Terra Nova Pub Date : 2023-05-02 DOI: 10.1111/ter.12658
D. Bran, F. Palma, M. Menichetti, E. Lodolo, Stefania Bunicontro, Jorge G. Lozano, L. Baradello, D. Winocur, M. Grossi, A. Tassone
{"title":"Active faulting in the Beagle Channel (Tierra del Fuego)","authors":"D. Bran, F. Palma, M. Menichetti, E. Lodolo, Stefania Bunicontro, Jorge G. Lozano, L. Baradello, D. Winocur, M. Grossi, A. Tassone","doi":"10.1111/ter.12658","DOIUrl":"https://doi.org/10.1111/ter.12658","url":null,"abstract":"In Tierra del Fuego, the Magallanes‐Fagnano Fault System (MFFS) accommodates a significant portion of the relative motion between the South America and Scotia plates. However, it remains unclear whether some of the deformation is partitioned southwards, along the Beagle Channel Fault System (BCFS). In this paper, high‐resolution seismic reflection profiles were used to identify fault‐related ruptures in the submerged Quaternary sediments of the Beagle Channel. Some faults reach the seafloor, affecting marine sediments, indicating they are Holocene in age. The correlation with outcrop data and lineaments mapped onshore suggests the post‐glacial reactivation of two structures: the E‐W striking BCFS and the NW‐SE‐trending Lapataia Fault Zone (LFZ). Whereas the BCFS displays along‐strike variation in throw, the LFZ shows significant normal displacements. These results imply that deformation occurs in a wider and more complex manner than previously thought and highlight the need for a thorough hazard assessment of the area.","PeriodicalId":22260,"journal":{"name":"Terra Nova","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41497814","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
A new type of saidenbachite with pseudomorphs after coesite phenocrysts from the north‐western Bohemian Massif, Germany 德国波西米亚地块西北部的一种新的蓝斑石斑晶后具有假形态的赛登白云岩
IF 2.4 3区 地球科学
Terra Nova Pub Date : 2023-05-02 DOI: 10.1111/ter.12659
H. Massonne
{"title":"A new type of saidenbachite with pseudomorphs after coesite phenocrysts from the north‐western Bohemian Massif, Germany","authors":"H. Massonne","doi":"10.1111/ter.12659","DOIUrl":"https://doi.org/10.1111/ter.12659","url":null,"abstract":"Saidenbachite started to crystallize from melt under ultrahigh pressure (UHP). This felsic igneous rock is known from two occurrences in the world only. The here reported new type of saidenbachite, found at the type locality in the central Erzgebirge Crystalline Complex, is characterized by millimetre‐sized aggregates of coarse‐grained quartz in a matrix of significantly smaller grains of garnet, rarely containing diamond inclusions, plagioclase, K‐feldspar, white mica, some dark mica, rutile and ±kyanite. According to the shape and the regular distribution of these aggregates showing similar size, they are interpreted as former coesite phenocrysts, which grew early in a felsic magma. This interpretation is corroborated by thermodynamic modelling demonstrating that coesite is the first major phase that crystallizes from SiO2‐rich (>66 wt%) magmas at UHP.","PeriodicalId":22260,"journal":{"name":"Terra Nova","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2023-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47352537","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
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