Meinhold, Guido

[["dc.bibliographiccitation.firstpage","242"],["dc.bibliographiccitation.journal","Journal of African Earth Sciences"],["dc.bibliographiccitation.lastpage","252"],["dc.bibliographiccitation.volume","143"],["dc.contributor.author","Hashemi Azizi, Seyyedeh Halimeh"],["dc.contributor.author","Rezaee, Payman"],["dc.contributor.author","Jafarzadeh, Mahdi"],["dc.contributor.author","Meinhold, Guido"],["dc.contributor.author","Moussavi Harami, Seyyed Reza"],["dc.contributor.author","Masoodi, Mehdi"],["dc.date.accessioned","2020-12-10T14:24:46Z"],["dc.date.available","2020-12-10T14:24:46Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1016/j.jafrearsci.2018.03.006"],["dc.identifier.issn","1464-343X"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/72346"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Evidence from detrital chrome spinel chemistry for a Paleo-Tethyan intra-oceanic island-arc provenance recorded in Triassic sandstones of the Nakhlak Group, Central Iran"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","447"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","Journal of the Geological Society of India"],["dc.bibliographiccitation.lastpage","454"],["dc.bibliographiccitation.volume","95"],["dc.contributor.author","Khullar, Sumeet"],["dc.contributor.author","Pandita, Sundeep K."],["dc.contributor.author","Meinhold, Guido"],["dc.contributor.author","Bhat, Ghulam M."],["dc.contributor.author","Raina, Brij K."],["dc.contributor.author","Thusu, Bindra"],["dc.contributor.author","Jones, Malcolm J."],["dc.date.accessioned","2020-12-10T14:14:35Z"],["dc.date.available","2020-12-10T14:14:35Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1007/s12594-020-1461-9"],["dc.identifier.eissn","0974-6889"],["dc.identifier.issn","0016-7622"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/71397"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Discovery of Organic Matter and Palynomorphs from the Neoproterozoic Zor Diamictite of the Ramsu Formation in the Ramban District, Jammu and Kashmir, India"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","36"],["dc.bibliographiccitation.journal","Sedimentary Geology"],["dc.bibliographiccitation.lastpage","52"],["dc.bibliographiccitation.volume","306"],["dc.contributor.author","Krippner, Anne"],["dc.contributor.author","Meinhold, Guido"],["dc.contributor.author","Morton, Andrew C."],["dc.contributor.author","von Eynatten, Hilmar"],["dc.date.accessioned","2018-11-07T09:39:39Z"],["dc.date.available","2018-11-07T09:39:39Z"],["dc.date.issued","2014"],["dc.description.abstract","This work is an attempt to evaluate six different garnet discrimination diagrams (one binary diagram and five ternary diagrams) commonly used by many researchers. The mineral chemistry of detrital garnet is a useful tool in sedimentary provenance studies, yet there is no clear-cut understanding of what garnet type originates from which host lithology. Several discrimination diagrams exist for garnet showing distinct compositional fields, separated by strict boundaries that are thought to reflect specific types of source rocks. For this study, a large dataset was compiled (N = 3532) encompassing major element compositions of garnets derived from various host lithologies, including metamorphic, igneous, and mantle-derived rocks, in order to test the applicability of the various discrimination schemes. The dataset contains mineral chemical data collected from the literature complemented with some new data (N = 530) from garnet-bearing metamorphic and ultramafic rocks in Austria and Norway. Discrimination of the tested diagrams only works for a small group of garnets derived from mantle rocks, granulite-facies metasedimentary rocks, and felsic igneous rocks. For other garnet types, the assignment to a certain type of host rock remains ambiguous. This is considered insufficient and therefore the evaluated diagrams should be used with great care. We further apply compositional biplot analysis to derive some hints towards future perspectives in detrital garnet discrimination. (c) 2014 Elsevier B.V. All rights reserved."],["dc.description.sponsorship","CASP; German Research Foundation (DFG) [EY 23/20-1]"],["dc.identifier.doi","10.1016/j.sedgeo.2014.03.004"],["dc.identifier.isi","000336707200003"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/33334"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.relation.issn","1879-0968"],["dc.relation.issn","0037-0738"],["dc.title","Evaluation of garnet discrimination diagrams using geochemical data of garnets derived from various host rocks"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","389"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","International Geology Review"],["dc.bibliographiccitation.lastpage","414"],["dc.bibliographiccitation.volume","62"],["dc.contributor.author","Löwen, Kersten"],["dc.contributor.author","Meinhold, Guido"],["dc.contributor.author","Arslan, Arzu"],["dc.contributor.author","Güngör, Talip"],["dc.contributor.author","Berndt, Jasper"],["dc.date.accessioned","2020-12-10T18:14:40Z"],["dc.date.available","2020-12-10T18:14:40Z"],["dc.date.issued","2019"],["dc.identifier.doi","10.1080/00206814.2019.1616619"],["dc.identifier.eissn","1938-2839"],["dc.identifier.issn","0020-6814"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/74576"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Evolution of the Palaeotethys in the Eastern Mediterranean: a multi-method approach to unravel the age, provenance and tectonic setting of the Upper Palaeozoic Konya Complex and its Mesozoic cover sequence (south-central Turkey)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.journal","Earth-Science Reviews"],["dc.bibliographiccitation.volume","116"],["dc.contributor.author","Meinhold, Guido"],["dc.date.accessioned","2018-11-07T09:30:10Z"],["dc.date.available","2018-11-07T09:30:10Z"],["dc.date.issued","2013"],["dc.format.extent","211"],["dc.identifier.doi","10.1016/j.earscirev.2012.12.003"],["dc.identifier.isi","000316159000012"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/31239"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.relation.issn","0012-8252"],["dc.title","Rutile and its applications in earth sciences (vol 102, pg 1, 2010)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","400"],["dc.bibliographiccitation.issue","5"],["dc.bibliographiccitation.journal","ARABIAN JOURNAL OF GEOSCIENCES"],["dc.bibliographiccitation.volume","9"],["dc.contributor.author","Bassis, Alexander"],["dc.contributor.author","Hinderer, Matthias"],["dc.contributor.author","Meinhold, Guido"],["dc.date.accessioned","2018-11-07T10:14:56Z"],["dc.date.available","2018-11-07T10:14:56Z"],["dc.date.issued","2016"],["dc.description.abstract","The Arabian Peninsula hosts a thick Palaeozoic succession, ranging from the Cambrian through the Permian. It not only contains deposits of the two major Palaeozoic glaciations but also holds both the major Palaeozoic hydrocarbon source and reservoir rocks. In addition, Palaeozoic sandstones serve as important aquifers. The succession is dominated by highly mature quartz arenites, as seen in thin sections. It is starved of fossils and very uniform in lithology. In order to better understand provenance, tectonic setting and stratigraphic relationships, the petrography as well as major and trace element geochemistry of sandstones were studied. Samples were taken from two study areas in southern (Wajid area) as well as central and northern (Tabuk area) Saudi Arabia. The dataset we present here is the first comprehensive study to cover the entire Palaeozoic succession in both the southern and northern part of the Arabian Peninsula. The collisional signal from some samples is a relic from the last stages of the amalgamation of Gondwana, carried into the basin by glaciogenic sediments. Major and trace element geochemistry indicate the Neoproterozoic basement of the nearby Arabian Shield as the most likely source for the detritus. Tectonic discrimination diagrams suggest that deposition of sandstones took place in an intracratonic setting, which is in accordance with the established model for the evolution of the Arabian Plate. An influx of fresh material, probably sourced from the Shield, did occur in the late Palaeozoic units of the Wajid area but did not reach the Tabuk area. Geochemical methods have shown some success in characterising the provenance of both study areas but were unable to reliably assess sedimentary recycling. A (meta-) sedimentary source for the Palaeozoic sandstones could therefore neither be proven nor refuted. Multivariate cluster and principal component analysis of geochemical data revealed significant differences between the two study areas."],["dc.description.sponsorship","German Research Foundation (DFG) [ME 3882/4-1]"],["dc.identifier.doi","10.1007/s12517-016-2412-z"],["dc.identifier.isi","000375767000071"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/40718"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.publisher.place","Heidelberg"],["dc.relation.issn","1866-7538"],["dc.relation.issn","1866-7511"],["dc.title","Petrography and geochemistry of Palaeozoic quartz-rich sandstones from Saudi Arabia: implications for provenance and chemostratigraphy"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","183"],["dc.bibliographiccitation.journal","Journal of Applied Geophysics"],["dc.bibliographiccitation.lastpage","196"],["dc.bibliographiccitation.volume","115"],["dc.contributor.author","Muhamad, Harbe"],["dc.contributor.author","Juhlin, Christopher"],["dc.contributor.author","Lehnert, Oliver"],["dc.contributor.author","Meinhold, Guido"],["dc.contributor.author","Andersson, Magnus"],["dc.contributor.author","Juanatey, Maria Garcia"],["dc.contributor.author","Malehmir, Alireza"],["dc.date.accessioned","2018-11-07T09:59:17Z"],["dc.date.available","2018-11-07T09:59:17Z"],["dc.date.issued","2015"],["dc.description.abstract","The Siljan impact structure is the largest known impact structure in Europe, the result of a Late Devonian meteorite impact (380.9 +/- 4.6 Ma). It is outlined mainly by a ring of lakes and Palaeozoic sedimentary rocks of Ordovician to Devonian age. The Palaeozoic successions are generally poorly exposed, but often well preserved with clear stratigraphy. At some locations they are strongly tectonised with sharply inclined or nearly overturned packages of crystalline basement and/or sediments. Down-hole logging data were acquired in the western part of the Siljan impact structure to determine some of the physical properties of the Palaeozoic sedimentary rocks in the area. Boreholes Mora 001 (356 m logged depth), Vattumyra Production (420 m logged depth), Mora VM 2 (94 m logged depth) and Mobillyft (437 m logged depth) were logged for temperature, sonic velocity and electrical resistivity. Logging data were compared to the lithology in the Mora 001 core, which had been mapped in detail, and information from other cores in the area. Good agreement between the natural gamma log and the core lithology was found. The sonic log shows a marked difference in velocity for the more clastic Silurian succession compared to the Ordovician succession and the Precambrian basement. A synthetic seismogram shows that a high amplitude reflection is expected at the Silurian-Ordovician boundary, raising some questions concerning interpretation of a seismic profile located about 6-7 km north of the study area. Correlation of the borehole logs shows that the thickness of the Silurian succession varies rapidly in the area and that its composition differs over distances of less than 1 km. These rapid variations suggest that the study area may be located in a megablock zone that was highly influenced by the impact Caledonian tectonics and changing depositional environments may also play a role in explaining the present-day borehole lithologies. Even though the boreholes are relatively far from the seismic profile and the geology is complex, the new data confirm that the Silurian has significant thickness along parts of the seismic profile. Potentially, the Silurian can be up to 450 m thick on parts of the profile. Further geophysical investigations in the area, including seismic surveying and gravity measurements, may help in mapping the complex structures away from the boreholes and discriminating between possible geological models. (C) 2015 Elsevier B.V. All rights reserved."],["dc.identifier.doi","10.1016/j.jappgeo.2015.02.019"],["dc.identifier.isi","000351646900018"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/37555"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","1879-1859"],["dc.relation.issn","0926-9851"],["dc.title","Analysis of borehole geophysical data from the Mora area of the Siljan Ring impact structure, central Sweden"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","188"],["dc.bibliographiccitation.journal","Sedimentary Geology"],["dc.bibliographiccitation.lastpage","202"],["dc.bibliographiccitation.volume","375"],["dc.contributor.author","Lewin, Anna"],["dc.contributor.author","Meinhold, Guido"],["dc.contributor.author","Hinderer, Matthias"],["dc.contributor.author","Dawit, Enkurie L."],["dc.contributor.author","Bussert, Robert"],["dc.date.accessioned","2020-12-10T15:21:16Z"],["dc.date.available","2020-12-10T15:21:16Z"],["dc.date.issued","2018"],["dc.identifier.doi","10.1016/j.sedgeo.2017.10.006"],["dc.identifier.issn","0037-0738"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/72971"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.title","Provenance of sandstones in Ethiopia during Late Ordovician and Carboniferous–Permian Gondwana glaciations: Petrography and geochemistry of the Enticho Sandstone and the Edaga Arbi Glacials"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","62"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","ARABIAN JOURNAL OF GEOSCIENCES"],["dc.bibliographiccitation.volume","9"],["dc.contributor.author","Meinhold, Guido"],["dc.contributor.author","Le Heron, Daniel Paul"],["dc.contributor.author","Elgadry, Mohamed"],["dc.contributor.author","Abutarruma, Yousef"],["dc.date.accessioned","2018-11-07T10:21:05Z"],["dc.date.available","2018-11-07T10:21:05Z"],["dc.date.issued","2016"],["dc.description.abstract","Across the Saharan platform, mudrocks of latest Ordovician-Silurian age (the Tanezzuft Formation) are a major source rock interval for Palaeozoic petroleum systems, but source rock quality is variable and difficult to predict. In the Kufra Basin of southern Libya, evidence for organic enrichment in this formation is scarce. This paper presents the results of a spectral gamma-ray study of siliciclastic sedimentary rocks in Jabal Eghei at the western margin of the basin. The study spans the Ordovician-Silurian interval together with overlying Mesozoic strata and was conducted at outcrop using a hand-held gamma-ray spectrometer. Element concentrations of potassium (K), uranium (U) and thorium (Th) were collected from mudrock and sandstone successions to identify natural background values of these elements for different formations. Uranium contents were used to identify possible 'hot shales' with source rock potential. This study shows that sandstones and mudrocks are clearly discriminated by their K, U and Th contents. Most sandstones have <0.3 % of K, <4 ppm of U and <10 ppm of Th. In contrast, the mudrocks show values of >0.3 % of K, >4 ppm of U and >10 ppm of Th. Based on gamma-ray spectrometry, the Tanezzuft Formation is divisible into lower, middle and upper members. There is a significant difference in K content between the three members. Exposures of the lower member show K contents less than 0.5 %; those from the middle member are between 1.5 and 3.6 %; and the upper member has K contents between 0.5 and 1.5 %. Notably, U values >10 ppm are restricted to the upper member, indicating the presence of 'warm shales' in Jabal Eghei. There is a progressive increase of Th/K ratios from the basal part of the Tanezzuft Formation towards the upper member. The decrease in K content and increase in Th/K ratios between the middle and the upper members of the Tanezzuft Formation can be explained by a mineralogical change, confirmed by x-ray diffraction analyses on representative samples. The total volume of clay minerals is 64 % higher in the upper member than in the middle member, with kaolinite predominant. These changes in composition suggest a change towards a more weathered sediment source, which was probably caused by increased continental weathering due to climate change from icehouse to greenhouse conditions at the Ordovician-Silurian transition."],["dc.identifier.doi","10.1007/s12517-015-2173-0"],["dc.identifier.isi","000369322200062"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/42020"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.publisher.place","Heidelberg"],["dc.relation.issn","1866-7538"],["dc.relation.issn","1866-7511"],["dc.title","The search for 'hot shales' in the western Kufra Basin, Libya: geochemical and mineralogical characterisation of outcrops, and insights into latest Ordovician climate"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","815"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","International Journal of Earth Sciences"],["dc.bibliographiccitation.lastpage","832"],["dc.bibliographiccitation.volume","104"],["dc.contributor.author","Caracciolo, Luca"],["dc.contributor.author","Critelli, Salvatore"],["dc.contributor.author","Cavazza, W."],["dc.contributor.author","Meinhold, Guido"],["dc.contributor.author","von Eynatten, Hilmar"],["dc.contributor.author","Manetti, Piero"],["dc.date.accessioned","2018-11-07T09:59:16Z"],["dc.date.available","2018-11-07T09:59:16Z"],["dc.date.issued","2015"],["dc.description.abstract","Detrital heavy mineral analysis coupled with a regional geological review provide key elements to re-evaluate the distribution of the Rhodope metamorphic zone (SE Europe) in the region and its role in determining the evolution of the Thrace basin. We focus on the Eocene-Oligocene sedimentary successions exposed in the southern Thrace basin margin to determine the dispersal pathways of eroded crustal elements, of both oceanic and continental origins, as well as their different contributions through time. Lithological aspects and tectonic data coupled with geochemistry and geochronology of metamorphic terranes exposed in the area point to a common origin of tectonic units exposed in NW Turkey (Biga Peninsula) with those of NE Greece and SE Bulgaria (Rhodope region). The entire region displays (1) common extensional signatures, consisting of comparable granitoid intrusion ages, and a NE-SW sense of shear (2) matching zircon age populations between the metapelitic and metamafic rocks of the Circum-Rhodope Belt (NE Greece) and those of the Camlica-Kemer complex and Cetmi m,lange exposed in NW Turkey. Detrital heavy mineral abundances from Eocene-Oligocene sandstones of the southern Thrace basin demonstrate the influence of two main sediment sources mostly of ultramafic/ophiolitic and low- to medium-grade metamorphic lithologies, plus a third, volcanic source limited to the late Eocene-Oligocene. Detrital Cr-spinel chemistry is used to understand the origin of the ultramafic material and to discriminate the numerous ultramafic sources exposed in the region. Compositional and stratigraphic data indicate a major influence of the metapelitic source in the eastern part (Gallipoli Peninsula) during the initial stages of sedimentation with increasing contributions from metamafic sources through time. On the other hand, the western and more external part of the southern Thrace margin (Gok double dagger eada, Samothraki and Limnos) displays compositional signatures according to a mixed provenance from the metapelitic and metamafic sources of the Circum-Rhodope Belt (CamlA +/- ca-Kemer complex and Cetmi m,lange). Tectonic restoration and compositional signatures provide constraints on the Palaeogene palaeogeography of this sector of the central-eastern Mediterranean region."],["dc.description.sponsorship","MIUR-PRIN Project [2009PBA7FL_001]"],["dc.identifier.doi","10.1007/s00531-014-1111-9"],["dc.identifier.isi","000351519400017"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/37554"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","1437-3262"],["dc.relation.issn","1437-3254"],["dc.title","The Rhodope Zone as a primary sediment source of the southern Thrace basin (NE Greece and NW Turkey): evidence from detrital heavy minerals and implications for central-eastern Mediterranean palaeogeography"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]