Australian Journal of Earth Sciences最新文献

{"title":"Aspidella and water escape structures from the ca 850 Ma (Tonian) Heavitree Formation, Amadeus Basin, Central Australia","authors":"P. S. Plummer, J. D. Gorter","doi":"10.1080/08120099.2023.2290248","DOIUrl":"https://doi.org/10.1080/08120099.2023.2290248","url":null,"abstract":"The mid-Tonian-aged Heavitree Formation, the basal unit of the Amadeus Basin succession, has long been believed to be devoid of metazoan fossils. Since a recent review of isolated occurrences of pu...","PeriodicalId":8601,"journal":{"name":"Australian Journal of Earth Sciences","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138745094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Tasmanian Tyennan Domain–a structural synthesis and review with tectonic and dynamic implications for continental margin subduction and exhumation","authors":"David Ross Gray, M. J. Vicary, A. W. McNeill","doi":"10.1080/08120099.2023.2280604","DOIUrl":"https://doi.org/10.1080/08120099.2023.2280604","url":null,"abstract":"The Tyennan Domain of western Tasmania is a structurally emplaced, complexly deformed lithotectonic sheet (allochthon). It comprises stacked, isoclinally folded slabs of allochthonous high-grade sc...","PeriodicalId":8601,"journal":{"name":"Australian Journal of Earth Sciences","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138579073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Outcrop to petrography scale and new age constraint of the Jatisamit Mélange in the Luk Ulo area, Central Java, Indonesia","authors":"M. Z. Tuakia, Rendy, W. D. Santoso, E. Puswanto, F. S. Yuwono, B. Sapiie, A. Dianto","doi":"10.1080/08120099.2023.2273419","DOIUrl":"https://doi.org/10.1080/08120099.2023.2273419","url":null,"abstract":"To resolve the formation of the Luk Ulo Mélange in the Karangsambung area of Central Java, the matrix-dominated Jatisamit Mélange, which is a member of the Luk Ulo Mélange, was examined. Outcrop an...","PeriodicalId":8601,"journal":{"name":"Australian Journal of Earth Sciences","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138579065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Shoshonitic pluton and an associated base-metal deposit in the Tarom–Hashtjin metallogenic zone, NW Iran: implication for tectono-magmatic evolution and metallogenic considerations","authors":"M. Afshari, Gh. Nabatian, M. Honarmand, M. Ebrahimi, X-H. Li","doi":"10.1080/08120099.2023.2273974","DOIUrl":"https://doi.org/10.1080/08120099.2023.2273974","url":null,"abstract":"Petrological, geochemical and zircon U–Pb and Hf isotope studies were carried out on the Hajseyran pluton, along the Tarom–Hashtjin metallogenic zone, as part of the Alborz–Azerbaijan magmatic belt...","PeriodicalId":8601,"journal":{"name":"Australian Journal of Earth Sciences","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138532023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Paleogene carbonate ramp development in the Kohat Basin of northwestern Pakistan","authors":"S. Ahmad, D. Kroon, J. J. G. Reijmer, S. Khan, O. S. Hersi, B. Wadood","doi":"10.1080/08120099.2023.2279062","DOIUrl":"https://doi.org/10.1080/08120099.2023.2279062","url":null,"abstract":"A series of well-exposed Paleogene sedimentary successions in the Kohat Basin of northwestern Pakistan (western Himalayas), are used to document the development of Paleogene sedimentary sequence de...","PeriodicalId":8601,"journal":{"name":"Australian Journal of Earth Sciences","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138532048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reply to Discussion of Yule, C. T. G., Daniell, J., Edwards, D. S., Rollet, N., & Roberts, E. M. (2023). Reconciling the onshore/offshore stratigraphy of the Canning Basin and implications for petroleum prospectivity. Australian Journal of Earth Sciences, 70(5), 691–715","authors":"C. T. G. Yule, J. Daniell, D. S. Edwards, N. Rollet, E. M. Roberts","doi":"10.1080/08120099.2023.2269564","DOIUrl":"https://doi.org/10.1080/08120099.2023.2269564","url":null,"abstract":"Published in Australian Journal of Earth Sciences: An International Geoscience Journal of the Geological Society of Australia (Vol. 70, No. 8, 2023)","PeriodicalId":8601,"journal":{"name":"Australian Journal of Earth Sciences","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138532019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Discussion of Yule, C.T.G., Daniell, J., Edwards, D.S., Rollet, N. & Roberts, E.M. (2023). Reconciling the onshore/offshore stratigraphy of the Canning Basin and implications for petroleum prospectivity. Australian Journal of Earth Sciences, 70(5), 691–715","authors":"A. J. Mory","doi":"10.1080/08120099.2023.2269572","DOIUrl":"https://doi.org/10.1080/08120099.2023.2269572","url":null,"abstract":"Published in Australian Journal of Earth Sciences: An International Geoscience Journal of the Geological Society of Australia (Vol. 70, No. 8, 2023)","PeriodicalId":8601,"journal":{"name":"Australian Journal of Earth Sciences","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138531992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Subsurface high-grading potential in Coal Seam Gas in eastern Australia","authors":"A. J. W. Everts, L. D. Alessio, C. J. Connell","doi":"10.1080/08120099.2023.2271547","DOIUrl":"https://doi.org/10.1080/08120099.2023.2271547","url":null,"abstract":"A case study from eastern Australia is used to demonstrate methods for subsurface high-grading and development-concept optimisation in Coal Seam Gas resource plays. We discuss two aspects of subsur...","PeriodicalId":8601,"journal":{"name":"Australian Journal of Earth Sciences","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138532022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tsunami or storm? A high-level coastal boulder field on the southern tip of Eyre Peninsula, South Australia","authors":"R. P. Bourman, C. V. Murray-Wallace, D. Panda, S. Buckman, D. Banerjee, D. D. Ryan, L. T. White","doi":"10.1080/08120099.2023.2272678","DOIUrl":"https://doi.org/10.1080/08120099.2023.2272678","url":null,"abstract":"A high-level coastal boulder field at Whalers Way, southern Eyre Peninsula, South Australia, occurs at elevations of 20–30 m above present sea-level on a gently seaward-sloping, karst-weathered calcrete-capped structural bench, formed on the Upper Pleistocene Bridgewater Formation and underlying Carnot Gneisses (Archean–Paleoproterozoic Sleaford Complex). More than 1000 ex situ boulders, cobbles and pebbles of gneiss and mafic igneous rocks, as well as fragments of calcrete, occur within the boulder field and cover an area >6000 m2. All the crystalline rock clasts are derived locally from bedrock outcrops along the adjacent coastline, where metasedimentary granulite-facies of the Carnot Gneisses crop out along shore platforms and their backing cliffs, close to present sea-level. The boulder field is younger than Marine Isotope Sub-Stage 5a (MIS 5a; ca 80 ka) based on amino acid racemisation ‘whole-rock’ analyses of calcarenite of the Bridgewater Formation, which forms the calcrete bench on which the boulder field rests. The boulder field wraps around the western extremity of cliff-top dunes dated at 18–17 ka by optically stimulated luminescence, implying that the boulder deposit post-dates the formation of the cliff-top dunes. Given that the clasts in the boulder field show minimal weathering rinds, sea-level during the Last Glacial Maximum was some 125 m lower than present and that between 80 and 7 ka ago, sea-level never attained present levels within the region, emplacement of the boulder field by a high-energy wave event in the Holocene highstand, following the 7000 years BP culmination of post-Glacial sea-level rise, is suggested. Storm waves, rather than a tsunami, most likely explain the emplacement of the boulder field.","PeriodicalId":8601,"journal":{"name":"Australian Journal of Earth Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135875973","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geodynamic evolution in the post-collisional stage of the East Kunlun Orogenic Belt: constraints from the Late Triassic intermediate–felsic igneous rocks","authors":"A-K. Zhang, S-Y. He, Y. Zhang, J-L. Sun, Y. Qian","doi":"10.1080/08120099.2023.2263883","DOIUrl":"https://doi.org/10.1080/08120099.2023.2263883","url":null,"abstract":"AbstractThe Late Triassic igneous rocks associated with post-collision are widely distributed in the East Kunlun Orogenic Belt (EKOB), but their specific dynamic mechanism and evolutional process are still controversial. To address these key issues, we investigated the geochronology and geochemistry of intermediate–felsic igneous rocks from the EKOB, including trachyandesite, rhyolite, porphyritic monzogranite, syenogranite, granite porphyry and crystalline tuff. Zircon U–Pb isotopes of these rocks indicate that they were formed between 231.1 and 215.8 Ma (i.e. Late Triassic). These igneous rocks have moderate to high SiO2 (60.29–79.56 wt%) and low mantle compatible element contents (e.g. Co: 0.37–12.62 ppm; Ni: 1.55–15.59 ppm), suggesting that continental crustal-derived material played an important role in their formation. Porphyritic monzogranite (231.1 Ma), syenogranite (228.1 Ma), trachyandesite (227.4 Ma) and rhyolite (215.8 Ma) have Nb/U (1.41–4.71) and Ce/Pb (1.48–6.19) ratios like that of the crust, with εHf(t) values (–1.31 to 2.26) and old two-stage model (TDM2) ages of 1340–1119 Ma, suggesting that they originated from the partial melting of a Mesoproterozoic crust with minor mantle material involved in their source. Crystalline tuff (224.6 Ma) and granite porphyry (222.3 Ma) have Nb/U (1.93–3.81) and Ce/Pb (0.30–3.18) ratios, negative εHf(t) values (–7.04 to −5.12) and old TDM2 ages (1703–1581 Ma) closer to those of crust, suggesting that they were derived from the partial melting of a Paleo–Mesoproterozoic continental crust without addition of mantle material. Based on our new data and published data, the Late Triassic igneous rocks from the EKOB can be divided into three stages, 236–227, 226–218 and 216–208 Ma, corresponding to slab break-off, lithospheric mantle delamination and thickened lower crust delamination, respectively.KEY POINTSThe intermediate–felsic igneous rocks from the East Kunlun Orogenic Belt are dated from 231.1 to 215.8 Ma (i.e. Late Triassic).These igneous rocks were derived from the partial melting of ancient continental crust.The Late Triassic igneous rocks from the East Kunlun Orogenic Belt can be divided into three stages, including slab break-off, lithospheric mantle delamination and thickened lower crust delamination.Keywords: East Kunlun Orogenic BeltLate Triassicpost-collisional magmatismgeodynamic evolutionintermediate–felsic igneous rocksslab break-offdelamination Data availability statementThe authors confirm that the data supporting the findings of this study are available within the article and the Supplemental data.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis research was funded by the Key Research Program of the National Natural Science Foundation of China (92062217), the Kunlun Talents High-end Innovative and Entrepreneurial Talents Project of Qinghai Province ([2022] No. 32), the Science and Technology Project of Qinghai Pr","PeriodicalId":8601,"journal":{"name":"Australian Journal of Earth Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135365715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}