{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,2]],"date-time":"2025-11-02T19:51:25Z","timestamp":1762113085736,"version":"3.28.0"},"reference-count":55,"publisher":"Geological Society of London","issue":"4","license":[{"start":{"date-parts":[[1990,7,1]],"date-time":"1990-07-01T00:00:00Z","timestamp":646790400000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-002"}],"content-domain":{"domain":["www.lyellcollection.org"],"crossmark-restriction":true},"short-container-title":["JGS"],"published-print":{"date-parts":[[1990,7]]},"abstract":"<jats:p>An extensive sheet of presumed middle Archaean supracrustal rocks within high-grade orthogneisses in inner Godth\u00e5bsfjord includes a section 3 km thick with exceptional preservation of pillow structures in low K tholeiitic amphibolites unambiguously indicating way up. The amphibolites are associated with pillow-structured and pyroclastic, komatiitic ultramafic schists, dunitic-harzburgitic sills, a stratiform gabbro, pyritous metacherts and quartzo-feldspathic gneisses and schists with field and chemical characteristics suggesting they formed as acid-intermediate tuffaceous sediments.<\/jats:p>\n          <jats:p>The sheet is tectonically overlain by older orthogneisses (Am\u00eetsoq) with tracts and enclaves of the early Archaean Isua\/Akilia supracrustal association. It is underlain by younger orthogneisses and granites with tracts of older, variably reworked Am\u00eetsoq gneisses. Rocks of the higher level were emplaced on a tectonic slide which marks the upper boundary of the supracrustal sheet. The original lower boundary with Am\u00eetsoq gneisses in the lower level may also have been a slide which has been obscured by emplacement of younger orthogneisses. Composite dome-in-dome structures with intervening synclinal cusps were superimposed on the sub-horizontal layer cake structure of the supracrustal sheet and the higher and lower levels of orthogneisses. Syntectonic granitic and amphibolite dykes (Kangil\u00edngua dykes) were emplaced in parts of the synforms, whilst granite emplacement and feldspar blastesis took place in the cores of some domes. The dome and cusp system appears to be part of a regional series of late Archaean, steeply inclined to upright structures trending northeast in the Godth\u00e5bsfjord region. In inner Godth\u00e5bsfjord the system evolved in response to buoyancy forces generated by injection of basaltic magmas and partial melting of orthogneisses at depth within a regime of regional compression associated perhaps with transcurrent intraplate motions.<\/jats:p>","DOI":"10.1144\/gsjgs.147.4.0639","type":"journal-article","created":{"date-parts":[[2007,12,20]],"date-time":"2007-12-20T22:39:02Z","timestamp":1198190342000},"page":"639-652","update-policy":"http:\/\/dx.doi.org\/10.1144\/crossmark-policy","source":"Crossref","is-referenced-by-count":34,"title":["The stratigraphy of a sheet of supracrustal rocks within high-grade orthogneisses and its bearing on Late Archaean structure in southern West Greenland"],"prefix":"10.1144","volume":"147","author":[{"given":"BRIAN","family":"CHADWICK","sequence":"first","affiliation":[{"name":"Earth Resources Centre, University, Exeter EX4 4QE, UK"}]}],"member":"1881","published-online":{"date-parts":[[2022,6,6]]},"reference":[{"key":"e_1_2_1_2_1","doi-asserted-by":"publisher","DOI":"10.34194\/rapggu.v85.7530"},{"key":"e_1_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.34194\/rapggu.v140.8035"},{"key":"e_1_2_1_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/0012-821X(76)90233-8"},{"key":"e_1_2_1_5_1","doi-asserted-by":"publisher","DOI":"10.34194\/rapggu.v112.7811"},{"key":"e_1_2_1_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/0012-821X(84)90154-7"},{"key":"e_1_2_1_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/0301-9268(80)90071-6"},{"key":"e_1_2_1_8_1","unstructured":"Brewer M. A. 1985. The petrology of the late Archaean gneisses and granites Nunatarssuaq Ivis\u00e2rtoq region southern West Greenland. PhD thesis University of Exeter"},{"key":"e_1_2_1_9_1","doi-asserted-by":"publisher","DOI":"10.34194\/rapggu.v120.7858"},{"key":"e_1_2_1_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/0301-9268(74)90009-6"},{"key":"e_1_2_1_11_1","first-page":"18","volume-title":"Geology of Greenland","author":"Bridgwater D.","year":"1976","unstructured":"Bridgwater D., Keto L., McGregor V. R., Myers J. S., Escher A., Watt W. S.Archaean gneiss complex of GreenlandGeology of Greenland1976Copenhagen1875Gr\u00f8nlands Geologiske Unders\u00f8gelse"},{"key":"e_1_2_1_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/0301-9268(81)90040-1"},{"key":"e_1_2_1_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/0301-9268(85)90013-0"},{"key":"e_1_2_1_14_1","doi-asserted-by":"publisher","DOI":"10.34194\/rapggu.v130.7946"},{"key":"e_1_2_1_15_1","unstructured":"Chadwick B. & Coe K. 1983. Descriptive text to the 1:100 000 sheet Buksefjorden 63 V.1 Nord. Gr\u00f8nlands Geologiske Unders\u00f8gelse"},{"key":"e_1_2_1_16_1","volume-title":"1:100000 Ivis\u00e2rtoq map sheet (64 V.2 N)","author":"Chadwick B.","year":"1988","unstructured":"Chadwick B., Coe K.1:100000 Ivis\u00e2rtoq map sheet (64 V.2 N)1988CopenhagenGeological Survey of Greenland"},{"key":"e_1_2_1_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/0301-9268(79)90003-2"},{"key":"e_1_2_1_18_1","doi-asserted-by":"publisher","DOI":"10.34194\/rapggu.v115.7830"},{"key":"e_1_2_1_19_1","doi-asserted-by":"publisher","DOI":"10.34194\/rapggu.v120.7860"},{"key":"e_1_2_1_20_1","unstructured":"Crewe M. A. 1986. The pedogenesis of Archaean basic and ultrabasic rocks from Ujaragssuit nun\u00e2t Ivis\u00e2rtoq region southern West Greenland. PhD thesis University of Exeter"},{"key":"e_1_2_1_21_1","doi-asserted-by":"publisher","DOI":"10.1016\/0040-1951(75)90060-8"},{"key":"e_1_2_1_22_1","doi-asserted-by":"publisher","DOI":"10.1139\/e83-175"},{"key":"e_1_2_1_23_1","doi-asserted-by":"publisher","DOI":"10.34194\/rapggu.v112.7813"},{"key":"e_1_2_1_24_1","doi-asserted-by":"publisher","DOI":"10.34194\/rapggu.v75.7453"},{"key":"e_1_2_1_25_1","doi-asserted-by":"crossref","first-page":"13","DOI":"10.1016\/B978-0-444-41765-7.50007-1","volume-title":"Trondhjemites, dacites and related rocks","author":"Ewart A.","year":"1979","unstructured":"Ewart A., Barker F.A review of the mineralogy and chemistry of Tertiary-Recent dacitic, latitic, rhyolitic and related salic volcanic rocksTrondhjemites, dacites and related rocks1979AmsterdamElsevier13122"},{"key":"e_1_2_1_26_1","doi-asserted-by":"publisher","DOI":"10.34194\/rapggu.v85.7531"},{"key":"e_1_2_1_27_1","doi-asserted-by":"publisher","DOI":"10.34194\/rapggu.v140.8036"},{"key":"e_1_2_1_28_1","first-page":"301","article-title":"The geochemistry of the Malene (mid-Archaean) ultramafic-mafic amphibolite suite, southern West Greenland","volume":"7","author":"Friend C. R. L.","year":"1981","unstructured":"Friend C. R. L., Hall R. P., Hughes D. J., Glover J. E., Groves D. E.The geochemistry of the Malene (mid-Archaean) ultramafic-mafic amphibolite suite, southern West GreenlandArchaean geology19817301312Special Publication of the Geological Society of Australia","journal-title":"Archaean geology"},{"key":"e_1_2_1_29_1","doi-asserted-by":"publisher","DOI":"10.1144\/gsjgs.144.3.0369"},{"key":"e_1_2_1_30_1","doi-asserted-by":"publisher","DOI":"10.1038\/335535a0"},{"key":"e_1_2_1_31_1","doi-asserted-by":"publisher","DOI":"10.34194\/rapggu.v128.7922"},{"key":"e_1_2_1_32_1","doi-asserted-by":"publisher","DOI":"10.1093\/petrology\/20.4.695"},{"key":"e_1_2_1_33_1","article-title":"The tholeiitic and komatiitic affinities of the Malene metavolcanic amphibolites from Ivis\u00e2rtoq, southern West Greenland","volume":"97","author":"Hall R. P.","year":"1980","unstructured":"Hall R. P.The tholeiitic and komatiitic affinities of the Malene metavolcanic amphibolites from Ivis\u00e2rtoq, southern West GreenlandRapport Gr\u00f8nlands Geologiske Unders\u00f8gelse198097","journal-title":"Rapport Gr\u00f8nlands Geologiske Unders\u00f8gelse"},{"key":"e_1_2_1_34_1","unstructured":"Hall R. P. 1981. The Archaean geology of Ivis\u00e2rtoq inner Godth\u00e5bsfjord southern West Greenland. PhD thesis CNAA Portsmouth Polytechnic UK"},{"key":"e_1_2_1_35_1","doi-asserted-by":"publisher","DOI":"10.1130\/0091-7613(1979)7<311:SEOTAR>2.0.CO;2"},{"key":"e_1_2_1_36_1","doi-asserted-by":"publisher","DOI":"10.1002\/gj.3350180106"},{"key":"e_1_2_1_37_1","first-page":"261","volume-title":"Evolution of the Lewisian and Comparable Precambrian High Grade Terrains","author":"Hall R. P.","year":"1987","unstructured":"Hall R. P., Hughes D. J., Friend C. R. L., Park R. G., Tarney J.Mid-Archaean basic magmatism of southern West GreenlandEvolution of the Lewisian and Comparable Precambrian High Grade Terrains198727LondonGeological Society261275Special Publication"},{"key":"e_1_2_1_38_1","first-page":"261","volume-title":"Thrust and Nappe Tectonics","author":"Hutton D. H. W.","year":"1981","unstructured":"Hutton D. H. W., McClay K. R., Price N. J.Tectonic slides in the CaledonidesThrust and Nappe Tectonics19819LondonGeological Society261266Special Publication"},{"key":"e_1_2_1_39_1","first-page":"345","article-title":"The early Precambrian gneisses of the Godth\u00e5b district, West Greenland","volume":"273","author":"McGregor V. R.","year":"1973","unstructured":"McGregor V. R.The early Precambrian gneisses of the Godth\u00e5b district, West GreenlandPhilosophical Transactions of the Royal Society, London1973A273345358","journal-title":"Philosophical Transactions of the Royal Society, London"},{"key":"e_1_2_1_40_1","unstructured":"McGregor V. R. Nutman A. P. & Friend C. R. L. 1986. The Archaean geology of the Godth\u00e5bsfjord region southern West Greenland. In: Ashwal L. D. (ed.) Early Crustal Genesis: The World\u2019s Oldest Rocks. Lunar and Planetary Institute Technical Report 86\u201304 113\u2013170"},{"key":"e_1_2_1_41_1","doi-asserted-by":"publisher","DOI":"10.1016\/0016-7037(84)90345-4"},{"key":"e_1_2_1_42_1","doi-asserted-by":"publisher","DOI":"10.1038\/245138a0"},{"key":"e_1_2_1_43_1","doi-asserted-by":"publisher","DOI":"10.1016\/0012-821X(75)90034-5"},{"key":"e_1_2_1_44_1","doi-asserted-by":"crossref","DOI":"10.34194\/bullggu.v150.6692","article-title":"Stratigraphy and structure of the Fiskenaesset Complex, southern West Greenland","volume":"150","author":"Myers J. S.","year":"1985","unstructured":"Myers J. S.Stratigraphy and structure of the Fiskenaesset Complex, southern West GreenlandBulletin Gr\u00f8nlands Geologiske Unders\u00f8gelse1985150","journal-title":"Bulletin Gr\u00f8nlands Geologiske Unders\u00f8gelse"},{"key":"e_1_2_1_45_1","doi-asserted-by":"publisher","DOI":"10.34194\/rapggu.v110.7801"},{"key":"e_1_2_1_46_1","first-page":"79","volume-title":"Precambrian Tectonics Illustrated","author":"Nutman A. P.","year":"1984","unstructured":"Nutman A. P., Kr\u00f6ner A., Greiling R.Early Archaean crustal evolution of the Isukasia area, southern West GreenlandPrecambrian Tectonics Illustrated1984StuttgartE. Schweizerbart\u2019sche Verlagsbuchhandlung7993"},{"key":"e_1_2_1_47_1","doi-asserted-by":"crossref","DOI":"10.34194\/bullggu.v154.6696","article-title":"The early Archaean to Proterozoic history of the Isukasia area, southern West Greenland","volume":"154","author":"Nutman A. P.","year":"1986","unstructured":"Nutman A. P.The early Archaean to Proterozoic history of the Isukasia area, southern West GreenlandBulletin Gr\u00f8nlands Geologiske Unders\u00f8gelse1986154","journal-title":"Bulletin Gr\u00f8nlands Geologiske Unders\u00f8gelse"},{"key":"e_1_2_1_48_1","doi-asserted-by":"publisher","DOI":"10.1029\/TC008i003p00573"},{"key":"e_1_2_1_49_1","unstructured":"Park J. F. W. 1986. Fault systems in the inner Godth\u00e5bsfjord region of the Archaean block southern West Greenland. PhD thesis University of Exeter"},{"key":"e_1_2_1_50_1","doi-asserted-by":"crossref","unstructured":"Robertson S. 1985. Late Archaean crustal evolution in the Ivis\u00e2rtoq region southern West Greenland. PhD thesis University of Exeter","DOI":"10.34194\/rapggu.v120.7859"},{"key":"e_1_2_1_51_1","first-page":"251","volume-title":"The Nature of the Lower Continental Crust","author":"Robertson S.","year":"1986","unstructured":"Robertson S., Dawson J. B., Carswell D. A., Hall J., Wedepohl K. H.Evolution of the late Archaean lower continental crust in southern west GreenlandThe Nature of the Lower Continental Crust198624LondonGeological Society251260Special Publication"},{"key":"e_1_2_1_52_1","doi-asserted-by":"publisher","DOI":"10.17741\/bgsf\/57.1-2.005"},{"key":"e_1_2_1_53_1","doi-asserted-by":"publisher","DOI":"10.1016\/0012-821X(88)90063-5"},{"key":"e_1_2_1_54_1","doi-asserted-by":"publisher","DOI":"10.1016\/0016-7037(80)90109-X"},{"key":"e_1_2_1_55_1","doi-asserted-by":"publisher","DOI":"10.34194\/rapggu.v80.7489"},{"key":"e_1_2_1_56_1","doi-asserted-by":"publisher","DOI":"10.1016\/0016-7037(81)90044-2"}],"container-title":["Journal of the Geological Society"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.lyellcollection.org\/doi\/pdf\/10.1144\/gsjgs.147.4.0639","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,11,19]],"date-time":"2024-11-19T12:49:12Z","timestamp":1732020552000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.lyellcollection.org\/doi\/10.1144\/gsjgs.147.4.0639"},"secondary":[{"URL":"https:\/\/geoscienceworld.org\/jgs\/article-lookup?doi=10.1144\/gsjgs.147.4.0639","label":"geoscienceworld"}]},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1990,7]]},"references-count":55,"journal-issue":{"issue":"4","published-online":{"date-parts":[[2007,5,16]]},"published-print":{"date-parts":[[1990,7]]}},"alternative-id":["10.1144\/gsjgs.147.4.0639"],"URL":"https:\/\/doi.org\/10.1144\/gsjgs.147.4.0639","relation":{},"ISSN":["0016-7649","2041-479X"],"issn-type":[{"type":"print","value":"0016-7649"},{"type":"electronic","value":"2041-479X"}],"subject":[],"published":{"date-parts":[[1990,7]]},"assertion":[{"value":"1989-03-03","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"1989-10-31","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2022-06-06","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}