Now showing 1 - 8 of 8
  • 2007Journal Article
    [["dc.bibliographiccitation.firstpage","119"],["dc.bibliographiccitation.journal","Palynology"],["dc.bibliographiccitation.lastpage","134"],["dc.bibliographiccitation.volume","31"],["dc.contributor.author","Lenz, Olaf Klaus"],["dc.contributor.author","Wilde, Volker"],["dc.contributor.author","Riegel, Walter"],["dc.contributor.author","Heinrichs, Till"],["dc.date.accessioned","2018-11-07T11:07:20Z"],["dc.date.available","2018-11-07T11:07:20Z"],["dc.date.issued","2007"],["dc.description.abstract","An exploration well drilled at the Middle Eocene fossil site of Messel, near Darmstadt, Germany proved that the famous Messel oil shale was deposited in a maar lake. During a quantitative palynological investigation of the entire succession of lake sediments, a monospecific population of dinoflagellate cysts was encountered. Based on transmitted light and scanning electron microscope (SEM) studies, they are assigned to the new peridinioid taxon Messelodinium thielepfeifferae gen. et sp. nov. because they are acavate and lack distinct apical or antapical horns. The dinoflagellate cysts exhibit considerable intraspecific variation in surface ornamentation. Messelodinium thielepfeifferae gen. et sp. nov. is abundant in sediments of the early holomictic stage of Lake Messel, but generally is reduced in frequency in the oil shale which represents the meromictic stage. These dinoflagellate cysts appear in peak abundances in mass flow and debris flow deposits in which material from the lake shore was transported downslope to the basin center. Thus, major concentrations of Messelodinium thielepfeifferae gen. et sp. nov. occurred in nearshore environments either due to primary population density of the parent motile stage, or due to secondary cyst accumulation by wind and wave action. The dinoflagellate cysts are notably absent in the uppermost 25 m of the core, where Botryococcus dominates. This shift in algal populations is interpreted as a response to changes in the chemistry of the water body."],["dc.identifier.doi","10.2113/gspalynol.31.1.119"],["dc.identifier.isi","000252435100013"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/52531"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Assoc Stratigraphic Palynologists Foundation"],["dc.relation.issn","0191-6122"],["dc.title","Distribution and paleoecologic significance of the freshwater dinoflagellate cyst Messelodinium thielepfeifferae gen. et sp nov from the Middle Eocene of Lake Messel, Germany"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]
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  • 2021Journal Article Research Paper
    [["dc.bibliographiccitation.firstpage","1321"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","International Journal of Earth Sciences"],["dc.bibliographiccitation.lastpage","1348"],["dc.bibliographiccitation.volume","110"],["dc.contributor.author","Siegesmund, Siegfried"],["dc.contributor.author","Oriolo, S."],["dc.contributor.author","Schulze, B."],["dc.contributor.author","Heinrichs, T."],["dc.contributor.author","Basei, M. A. S."],["dc.contributor.author","Lammerer, B."],["dc.date.accessioned","2021-06-01T09:42:54Z"],["dc.date.available","2021-06-01T09:42:54Z"],["dc.date.issued","2021"],["dc.description.abstract","Abstract New whole-rock geochemical and coupled U–Pb and Lu–Hf LA-ICP-MS zircon data of metasedimentary rocks of the Austroalpine, South Alpine and Penninic basement domains are presented, to disentangle the pre-Variscan tectonic evolution of the proto-Alps. The studied units seem to record distinct stages of protracted Late Ediacaran to Carboniferous tectonosedimentary processes prior to the Variscan collision. In the case of Austroalpine and South Alpine units, nevertheless, no major differences in terms of provenance are observed, since most detrital zircon samples are characterized by a major Pan-African peak. Their detrital zircon spectra record a provenance from the northeastern Saharan Metacraton and the Sinai basement at the northern Arabian-Nubian Shield, being thus located along the eastern Early Paleozoic northern Gondwana margin, whereas sources located further west are inferred for the Penninic Unit, which might have been placed close to the Moldanubian Unit of the Bohemian Massif. In any case, it is thus clear that the Alpine basement remained in a close position to the Gondwana mainland at least during the Early Paleozoic. The Late Ediacaran to Silurian tectonic evolution, which includes Cadomian and Cenerian tectonometamorphic and magmatic processes, seem thus to record a continuum related to a retreating-mode accretionary orogen, with diachronous back-arc basin opening and possibly discrete compressional/transpressional pulses linked to changes in subduction zone dynamics. On the other hand, it is inferred that the Alpine basement essentially comprises Pan-African metasedimentary and subordinate metaigneous rocks, possibly with very few Early Neoproterozoic relics. This basement was significantly reworked during the protracted Paleozoic orogenic evolution, due to anatexis and/or assimilation by mantle-derived juvenile magmatism."],["dc.identifier.doi","10.1007/s00531-021-02019-7"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/85381"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-425"],["dc.relation.eissn","1437-3262"],["dc.relation.issn","1437-3254"],["dc.relation.orgunit","Abteilung Strukturgeologie und Geodynamik"],["dc.rights","CC BY 4.0"],["dc.title","The birth of the Alps: Ediacaran to Paleozoic accretionary processes and crustal growth along the northern Gondwana margin"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]
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  • 2006Book Chapter
    [["dc.contributor.author","Noubactep, Chicgoua"],["dc.contributor.author","Merten, Dirk"],["dc.contributor.author","Heinrichs, Till"],["dc.contributor.author","Sonnefeld, Jürgen"],["dc.contributor.author","Sauter, Martin"],["dc.contributor.editor","Merkel, B. J."],["dc.contributor.editor","Hasche-Berger, A."],["dc.date.accessioned","2010-09-13T07:51:49Z"],["dc.date.accessioned","2021-10-27T13:14:01Z"],["dc.date.available","2010-09-13T07:51:49Z"],["dc.date.available","2021-10-27T13:14:01Z"],["dc.date.issued","2006"],["dc.description.abstract","A 782 d solubilization study using not shaken batch experiments and involving one uranium-bearing rock and three natural carbonate minerals was conducted to characterize uranium (U) leaching under oxic conditions. Results showed that aqueous U concentration increased continuously with a solubilization rate of 0.16 mgm-2h-1 for the first 564 d (1.5 y). After 1.5 y, U concentration reached a maximum value (saturation) and decreased afterwards. The saturation concentration of 54 mgL-1 (mean value) was influenced to various extent by the presence of carbonate minerals. Dissolution/precipitation, adsorption or ion exchange processes appear to control U solubilization."],["dc.format.extent","425-435"],["dc.format.mimetype","application/pdf"],["dc.identifier.doi","10.1007/3-540-28367-6_42"],["dc.identifier.fs","48807"],["dc.identifier.ppn","587490810"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/5057"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/91825"],["dc.language.iso","en"],["dc.notes.intern","Migrated from goescholar"],["dc.publisher","Springer"],["dc.publisher.place","Berlin/Heidelberg"],["dc.relation.ispartof","Uranium in the Environment"],["dc.relation.orgunit","Fakultät für Geowissenschaften und Geographie"],["dc.rights","Goescholar"],["dc.rights.access","openAccess"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject.ddc","550"],["dc.title","Characterizing uranium solubilization under natural near oxic conditions"],["dc.type","book_chapter"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","submitted_version"],["dspace.entity.type","Publication"]]
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  • 2006Conference Paper
    [["dc.bibliographiccitation.firstpage","153"],["dc.bibliographiccitation.issue","1-4"],["dc.bibliographiccitation.journal","Tectonophysics"],["dc.bibliographiccitation.lastpage","170"],["dc.bibliographiccitation.volume","427"],["dc.contributor.author","Vollbrecht, Axel"],["dc.contributor.author","Pawlowski, Jan"],["dc.contributor.author","Leiss, Bernd"],["dc.contributor.author","Heinrichs, Till"],["dc.contributor.author","Seidel, Madlen"],["dc.contributor.author","Kronz, Andreas"],["dc.date.accessioned","2018-11-07T08:56:20Z"],["dc.date.available","2018-11-07T08:56:20Z"],["dc.date.issued","2006"],["dc.description.abstract","Mylonitic gneisses from the Munchberg Massif contain single grains (type I) and polycrystalline aggregates (type 11) of garnet displaying a distinct elongation parallel to a macroscopic lineation which is interpreted as the result of ductile deformation. Lattice-preferred orientations of quartz (textures) symmetrical to the macroscopic foliation and lineation and the lack of rotational microfabrics indicate that the bulk deformation was pure shear at least during the latest strain increments. Garnet textures measured by EBSD together with microprobe analyses demonstrate that these two structural types of garnet can be related to two different processes of ductile deformation: (1) For the single grains stretching can be attributed to diffusion creep along grain boundary zones (Coble creep). The related mass transfer is indicated by the fact that primary growth zones are cut off at the long faces of the grains while the related strain shadow domains do not show comparable chemical zoning. Pressure solution and precipitation suitable to produce similar structures can be largely ruled out because retrogressive reactions pointing to the presence of free hydrous fluids are missing. (2) For the polycrystalline garnet aggregates consisting of cores grading into fine-grained mantles, dislocation creep and associated rotation recrystallization can be assumed. Continuous lattice rotation from the core to the outer polycrystalline rim allow a determination of the related dominant slip systems which are {100} < 010 > and equivalent systems according to the cubic lattice symmetry. The same holds for garnets which appear to be completely recrystallized. For this type of fine-grained aggregates an alternative nucleation model is discussed. Due to penetrative dislocation glide in connection with short range diffusion and the resulting lattice rotation, primary growth zones are strongly disturbed. Since for the considered rock unit of the Munchberg Massif peak metamorphic temperatures between 630 and 670 degrees C can be assumed, this study clearly demonstrates that the inferred processes of ductile garnet deformation can occur not only in FIT regimes as often suggested in the literature even if embedded within a matrix of \"low-strength\" minerals like quartz, feldspars and micas. (c) 2006 Elsevier B.V. All rights reserved."],["dc.identifier.doi","10.1016/j.tecto.2006.05.024"],["dc.identifier.isi","000242871300010"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/23124"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Bv"],["dc.publisher.place","Amsterdam"],["dc.relation.conference","International Conference on Deformation Mechanisms, Rheology and Tectonics (DRT 2005)"],["dc.relation.eventlocation","ETH Zurich, Zurich, SWITZERLAND"],["dc.relation.issn","0040-1951"],["dc.relation.orgunit","Abteilung Strukturgeologie und Geodynamik"],["dc.title","Ductile deformation of garnet in mylonitic gneisses from the Munchberg Massif (Germany)"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]
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  • 2014Journal Article
    [["dc.bibliographiccitation.firstpage","233"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","International Journal of Earth Sciences"],["dc.bibliographiccitation.lastpage","252"],["dc.bibliographiccitation.volume","103"],["dc.contributor.author","Heinrichs, Till"],["dc.contributor.author","Salameh, Elias"],["dc.contributor.author","Khouri, Hani"],["dc.date.accessioned","2018-11-07T09:46:37Z"],["dc.date.available","2018-11-07T09:46:37Z"],["dc.date.issued","2014"],["dc.description.abstract","The deeply eroded Waqf as Suwwan ring structure was recently discovered to be a large impact, the first identified in the near east. Large-scale reflection seismic structure shows the impact situated high on the northeastern flank of the Jordan Uplift sloping into Wadi Sirhan Basin. If exhumation is linked to the Arabia-Eurasia collision, a likely time window for the impact event may be latest Eocene to Late Oligocene. Impact into a shallow sea seems an optional scenario. Old reflection seismic lines offer limited insight into the deep structure of the rim and part of the central uplift of the complex crater. An important structural clue is provided by a well-resolved seismic horizon of a yet tentative correlation with a Paleozoic black shale. The central gravity high is compatible with a mass surplus by the uplift of denser Paleozoic basement below the central uplift. The gravity model further indicates a ring of dense Paleozoic sediments rising from below into the ring syncline. Seismics show presumably radial synclines in the central uplift which are interpreted by centripetal constrictional flow during crater collapse. Beneath the final crater's outer boundary, a shallow-dip normal fault zone, subtle seismic structure in uncollapsed footwall segments reveal an asymmetry of strain. The asymmetry is attributed to the cratering flow by an oblique impact directed toward NE. The finding provides independent support to an earlier suggestion of impact obliquity based on vergency of folds exposed on the central uplift."],["dc.description.sponsorship","DAAD; Ministry of Higher Education/Scientific Research Fund/Jordan"],["dc.identifier.doi","10.1007/s00531-013-0930-4"],["dc.identifier.isi","000331106800015"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/34918"],["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 Waqf as Suwwan crater, Eastern Desert of Jordan: aspects of the deep structure of an oblique impact from reflection seismic and gravity data"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]
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  • 2018Journal Article Research Paper
    [["dc.bibliographiccitation.firstpage","2293"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","International Journal of Earth Sciences"],["dc.bibliographiccitation.lastpage","2315"],["dc.bibliographiccitation.volume","107"],["dc.contributor.author","Siegesmund, S."],["dc.contributor.author","Oriolo, S."],["dc.contributor.author","Heinrichs, T."],["dc.contributor.author","Basei, M. A. S."],["dc.contributor.author","Nolte, N."],["dc.contributor.author","Huttenrauch, F."],["dc.contributor.author","Schulz, B."],["dc.date.accessioned","2019-07-24T07:48:23Z"],["dc.date.available","2019-07-24T07:48:23Z"],["dc.date.issued","2018"],["dc.description.abstract","New U–Pb and Lu–Hf detrital zircon data together with whole-rock geochemical and Sm–Nd data were obtained for paragneisses of the Austroalpine basement south of the Tauern Window. Geochemically immature metasediments of the Northern–Defereggen–Petzeck (Ötztal–Bundschuh nappe system) and Defereggen (Drauzug–Gurktal nappe system) groups contain zircon age populations which indicate derivation mainly from Pan-African orogens. Younger, generally mature metasediments of the Gailtal Metamorphic Basement (Drauzug–Gurktal nappe system), Thurntaler Phyllite Group (Drauzug–Gurktal nappe system) and Val Visdende Formation (South Alpine Basement) were possibly derived from more distant sources. Their significantly larger abundances of pre-Pan-African zircons record a more advanced stage of downwearing of the Pan-African belts and erosion of older basement when the Austroalpine terrane was part of the Early Palaeozoic Northern Gondwana passive margin. Most zircon age spectra are dominated by Ediacaran sources, with lesser Cryogenian, Tonian and Stenian contributions and subordinate Paleoproterozoic and Neoarchean ages. These age patterns are similar to those recorded by Cambro–Ordovician sedimentary sequences in northeastern Africa between Libya and Jordan, and in some pre-Variscan basement inliers of Europe (e.g. Dinarides–Hellenides, Alboran microplate). Therefore, the most likely sources seem to be in the northeastern Saharan Metacraton and the Northern Arabian–Nubian Shield (Sinai), further supported by whole-rock Sm–Nd and zircon Lu–Hf data."],["dc.identifier.doi","10.1007/s00531-018-1599-5"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/61967"],["dc.language.iso","en"],["dc.relation.issn","1437-3254"],["dc.relation.issn","1437-3262"],["dc.relation.orgunit","Abteilung Strukturgeologie und Geodynamik"],["dc.title","Provenance of Austroalpine basement metasediments: tightening up Early Palaeozoic connections between peri-Gondwanan domains of central Europe and Northern Africa"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dspace.entity.type","Publication"]]
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  • 2011Journal Article
    [["dc.bibliographiccitation.firstpage","424"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","Journal of Medical Primatology"],["dc.bibliographiccitation.lastpage","434"],["dc.bibliographiccitation.volume","25"],["dc.contributor.author","Brack, Manfred"],["dc.contributor.author","Schwartz, Peter"],["dc.contributor.author","Heinrichs, Till"],["dc.contributor.author","Schultz, Michael"],["dc.contributor.author","Fuchs, Eberhard"],["dc.date.accessioned","2022-10-06T13:25:13Z"],["dc.date.available","2022-10-06T13:25:13Z"],["dc.date.issued","2011"],["dc.identifier.doi","10.1111/j.1600-0684.1996.tb00039.x"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/114788"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-602"],["dc.relation.issn","0047-2565"],["dc.relation.orgunit","Deutsches Primatenzentrum"],["dc.title","Tumors of the respiratory tract observed at the German Primate Center, 1978-1994"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]
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  • 2006Journal Article
    [["dc.bibliographiccitation.firstpage","473"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Marine and Petroleum Geology"],["dc.bibliographiccitation.lastpage","484"],["dc.bibliographiccitation.volume","23"],["dc.contributor.author","Al-Zoubi, Abdallah S."],["dc.contributor.author","Heinrichs, Till"],["dc.contributor.author","Sauter, Martin"],["dc.contributor.author","Qabbani, Isarn"],["dc.date.accessioned","2018-11-07T09:54:57Z"],["dc.date.available","2018-11-07T09:54:57Z"],["dc.date.issued","2006"],["dc.description.abstract","Interpretation of recently released seismic reflection lines from the Shuna (Eastern Jericho) Basin combined with re-analysis of the lithologic logs of the deep JV-1 and JV-2 boreholes provide new insights into the structure of the sedimentary basin that formed along the Dead Sea Transform fault north of the Dead Sea in Jordan. We identified four major seismic boundaries in the reflection profiles. The upper two were correlated with borehole stratigraphy. These reflection boundaries include the top of the pan-African basement (R4), the base of the Mesozoic (R3), the base of the Cretaceous (R2), and the base of the post-Eocene section (RI). The latter records sedimentation during the Dead Sea Transform tectonic regime. The total thickness attained by the older sedimentary units (Late Cretaceous through Cambrian) is apparently less than 2 km. We identified a subsurface structure, a faulted monocline, with a N-S trend, sub-parallel to the strike of the Dead Sea Transform, that is named here Al Kharrar monocline. The Al Kharrar structural ensemble is buried by syntectonic lacustrine and fluviatile sediments of the Jordan Valley Group. The structure formed as part of the Dead Sea Transform deformation overprinting the Late Cretaceous Syrian arc folds. Continued tectonic deformation is evident from the prominent unconformity at the base of post-Eocene syntectonic deposits that dip NW, W and S away from the structural high. Along the NW-flank of the Al Kharrar monocline syntectonic sediment thickness is generally less than 0.5 km while along the SW-flank it thickens rapidly to nearly I km at the southern end of the interpreted seismic lines. This rapid southern subsidence probably continues into the north end of the Dead Sea Basin the lake's shoreline being located less than 3 km to the south. Young bifurcating faults with reverse slip components cutting the eastern part of the Al-Kharrar monocline are attributed to a positive flower structure. This pattern suggests strike slip with localized active compression northeast of the Dead Sea. It may result from local transpression between fault strands that appear to be a northward continuation of the eastern boundary fault of the Dead Sea Basin. (c) 2006 Elsevier Ltd. All rights reserved."],["dc.identifier.doi","10.1016/j.marpetgeo.2006.03.002"],["dc.identifier.isi","000239289400004"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/36646"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Sci Ltd"],["dc.relation.issn","0264-8172"],["dc.title","Geological structure of the eastern side of the lower Jordan valley/Dead Sea rift: Reflection seismic evidence"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]
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