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  • 1
    Monograph available for loan
    Monograph available for loan
    Paleoclimates : understanding climate change past and present (2010)
    New York, NY : Columbia Univ. Press
    Details Availability
    Call number: 12/M 10.0313
    Description / Table of Contents: The field of paleoclimatology relies on physical, chemical, and biological proxies of past climate changes that have been preserved in natural archives such as glacial ice, tree rings, sediments, corals, and speleothems. Paleoclimate archives obtained through field investigations, ocean sediment coring expeditions, ice sheet coring programs, and other projects allow scientists to reconstruct climate change over much of earth's history. When combined with computer model simulations, paleoclimatic reconstructions are used to test hypotheses about the causes of climatic change, such as greenhouse gases, solar variability, earth's orbital variations, and hydrological, oceanic, and tectonic processes. This book is a comprehensive, state-of-the art synthesis of paleoclimate research covering all geological timescales, emphasizing topics that shed light on modern trends in the earth's climate. Thomas M.Cronin discusses recent discoveries about past periods of global warmth, changes in atmospheric greenhouse gas concentrations, abrupt climate and sea-level change, natural temperature variability, and other topics directly relevant to controversies over the causes and impacts of climate change.
    Type of Medium: Monograph available for loan
    Pages: XVIII, 441 S. , Ill., graph. Darst., Kt.
    ISBN: 9780231144940
    Classification:
    Meteorology and Climatology
    Location: Reading room
    Branch Library: GFZ Library
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  • 2
    Electronic Resource
    Electronic Resource
    Episodic fresh surface waters in the Eocene Arctic Ocean (2006)
    [s.l.] : Nature Publishing Group
    Nature 441 (2006), S. 606-609 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] It has been suggested, on the basis of modern hydrology and fully coupled palaeoclimate simulations, that the warm greenhouse conditions that characterized the early Palaeogene period (55–45 Myr ago) probably induced an intensified hydrological cycle with precipitation exceeding ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature04692
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    Paper (German National Licenses)
    Fulltext
  • 3
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    Ostracoda communities from DSDP Holes 95-612 and 95-613
    PANGAEA
    In:  Supplement to: Cronin, Thomas M; Compton-Gooding, Ellen E (1987): Cenozoic ostracoda from Deep Sea Drilling Project Leg 95 off New Jersey (Sites 612 and 613). In: Poag, CW; Watts, AB; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 95, 439-451, https://doi.org/10.2973/dsdp.proc.95.116.1987
    Details
    Publication Date: 2023-05-12
    Description: Ninety-three samples from DSDP Leg 95, Sites 612 and 613, were examined for ostracodes to aid in the study of paleoceanography and paleodepth. In total, more than 25 genera were recovered. The most abundant and diverse ostracode assemblages were from the middle Eocene at both sites; lower and upper Eocene and Pliocene-Pleistocene assemblages were less abundant and were dominated by only three or four species. The middle Eocene assemblages were the most diagnostic of paleoenvironment and suggest water depths of 1000 to 2000 m. These assemblages are similar to other middle Eocene assemblages known from the Caribbean and North Atlantic, and signify a relatively cosmopolitan fauna that inhabited moderately deep but relatively warm bottom waters.
    Keywords: Deep Sea Drilling Project; DSDP
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 4
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    (Table S2) Stratigraphic correlation tie points between IODP Exp302 composite core, PS-2185-6 and 96/1-PC
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: 302-CompSite; Arctic Coring Expedition, ACEX; CCGS Captain Molly Kool (Vidar Viking); COMPCORE; Composite Core; Depth, reference; DEPTH, sediment/rock; Exp302; Integrated Ocean Drilling Program / International Ocean Discovery Program; Intercore correlation; IODP
    Type: Dataset
    Format: text/tab-separated-values, 39 data points
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  • 5
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    (Table S3) Possible ties beyond 1215 ka in the slower sedimentation rate age model of IODP Exp302 composite core
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: 302-CompSite; Age model; Arctic Coring Expedition, ACEX; CCGS Captain Molly Kool (Vidar Viking); COMPCORE; Composite Core; Datum level; DEPTH, sediment/rock; Exp302; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP
    Type: Dataset
    Format: text/tab-separated-values, 28 data points
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  • 6
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    (Table S3) Possible ties beyond 1215 ka in the faster sedimentation rate age model of IODP Exp302 composite core
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: 302-CompSite; Age model; Arctic Coring Expedition, ACEX; CCGS Captain Molly Kool (Vidar Viking); COMPCORE; Composite Core; Datum level; DEPTH, sediment/rock; Exp302; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP
    Type: Dataset
    Format: text/tab-separated-values, 12 data points
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  • 7
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    (Table 4) Absolute abundance of ostracoda in shallow Arctic coretop samples
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: 80PB50; 81-APB-13; AC-71-36; AC-71-38; AC-71-48; Area/locality; AW-2375; AW-2839; AW-2904; AW-2905; AW-3101A; AW-3143; AW-3154; AW-3161; AW-57-328-46; AW-62-160-10; AW-62-160-7; AW-62-160-8; AW-62-160-9; AW-IH25; AW-NN; AW-V6-33-78-21; Barnes26-80; Barnes27-80; Barnes56-80; Bart.30; Bart.46; Bart.49; Bart.55; Bart.LT23Hazel3; Bart.LT26Hazel2; Bart.LT30; Bart.LT35Hazel5; Bart.N.Omenolu; Beaufort Sea; Canadian Beaufort; Cape Martineau; Chest.Inlet1; Chest.Inlet2; Chest.Inlet5; Chest.Inlet8; Chest.Inlet9; Chikchi Sea; Counting 〉150 µm fraction; DC1-79-EG-1; DC2-80-EG-186; DC2-80-EG-73; DEPTH, sediment/rock; EGAL-75-KC-53; E Greenland; Elevation of event; Event label; Gulf of Alaska; GV8202745; GV82027-67; GV83033#44; GV83033#45; HU69-050.830; HU69-050.836; HU85-027-76; Hudson Bay; Hudson Strait; Hurd Channel; Ikerssauk15; Ikerssauk2; Ikerssauk4; Ikerssauk5; Kara Sea; Labrador; Latitude of event; Longitude of event; Melville Penin.; Northwind5; Northwind65#106; Northwind65#112; Northwind65#115; Northwind65#41; Norton Sound; N Star Bay, Greenl.; Ostracoda; Penney274101; PenneyIkerss.#1; PRZO70-22-130; PRZO72-44; Quaternary Environment of the Eurasian North; QUEEN; S5-77-BS-17; SEA5-125A; SEA-5-76-174; SW Greenland; Ungava Bay; W Greenland; WhiteBearHazel18
    Type: Dataset
    Format: text/tab-separated-values, 134 data points
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  • 8
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    Age determination and stable carbon isotope ratios of Neogloboquadrina pachyderma of IODP Hole 302-M0004C (2008)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Description: The Integrated Ocean Drilling Program (IODP) Arctic Coring Expedition (ACEX) Hole 4C from the Lomonosov Ridge in the central Arctic Ocean recovered a continuous 18 m record of Quaternary foraminifera yielding evidence for seasonally ice-free interglacials during the Matuyama, progressive development of large glacials during the mid-Pleistocene transition (MPT) ~1.2-0.9 Ma, and the onset of high-amplitude 100-ka orbital cycles ~500 ka. Foraminiferal preservation in sediments from the Arctic is influenced by primary (sea ice, organic input, and other environmental conditions) and secondary factors (syndepositional, long-term pore water dissolution). Taking these into account, the ACEX 4C record shows distinct maxima in agglutinated foraminiferal abundance corresponding to several interglacials and deglacials between marine isotope stages (MIS) 13-37, and although less precise dating is available for older sediments, these trends appear to continue through the Matuyama. The MPT is characterized by nearly barren intervals during major glacials (MIS 12, 16, and 22-24) and faunal turnover (MIS 12-24). Abundant calcareous planktonic (mainly Neogloboquadrina pachyderma sin.) and benthic foraminifers occur mainly in interglacial intervals during the Brunhes and very rarely in the Matuyama. A distinct faunal transition from calcareous to agglutinated foraminifers 200-300 ka in ACEX 4C is comparable to that found in Arctic sediments from the Lomonosov, Alpha, and Northwind ridges and the Morris Jesup Rise. Down-core disappearance of calcareous taxa is probably related to either reduced sea ice cover prior to the last few 100-ka cycles, pore water dissolution, or both.
    Keywords: 302-M0004C; ACEX-M4C; Age, 14C AMS; Age, 14C calibrated, CALIB (Stuiver & Reimer, 1993); Age, dated; Age, dated material; Age, error; Age, maximum/old; Age, minimum/young; Arctic Coring Expedition, ACEX; Arctic Ocean; Calendar age; CCGS Captain Molly Kool (Vidar Viking); DEPTH, sediment/rock; Exp302; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Isotope ratio mass spectrometry; Neogloboquadrina pachyderma dextral and/or sinistral, δ13C; Sample, optional label/labor no; Sample code/label
    Type: Dataset
    Format: text/tab-separated-values, 30 data points
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  • 9
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    Ostracode species census data for DSDP Leg 94 sites
    PANGAEA
    In:  Supplement to: Cronin, Thomas M; Raymo, Maureen E; Kyle, K P (1996): Pliocene (3.2-2.4 Ma) ostracode faunal cycles and deep ocean circulation, North Atlantic Ocean. Geology, Aug 1996; 24:, 24, 695-698, https://doi.org/10.1130/0091-7613(1996)024%3C0695:PMOFCA%3E2.3.CO;2
    Details
    Publication Date: 2023-06-27
    Description: Ostracode assemblages from Deep Sea Drilling Project Sites 607 (western Mid-Atlantic Ridge) and 610 (southeast Rockall Plateau) show rapid, systematic shifts during late Pliocene glacial-interglacial cycles that reflect deep-sea environmental change. Progressive decreases in North Atlantic deep-water taxa and increases in Southern Ocean taxa occur from 3.4 to 2.4 Ma, and high-amplitude faunal cycles begin near 2.8 Ma. Four ostracode assemblages, each with a characteristic phase relative to 41 k.y. obliquity glacial-interglacial d18O cycles, characterize the benthic faunal record at Site 607. Cross-spectral analysis shows that the Site 607 glacial assemblage has a 41 k.y. periodicity significant at the 95% level; other assemblages show a less significant, but still obvious, concentration of variance at 41 k.y. Faunal patterns suggest climatically controlled reorganization of deep-sea benthic communities during glacial-interglacial cycles due to oscillating deep-sea environments.
    Keywords: 94-607; 94-607A; 94-610; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg94; North Atlantic/FLANK; North Atlantic/RIDGE
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 10
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    (Table 1) Late Pleistocene planktonic foraminifera of Hole 302-M0004C (2009)
    PANGAEA
    In:  Supplement to: Eynaud, Frédérique; Cronin, Thomas M; Smith, Shannon A; Zaragosi, Sebastien; Mavel, J; Mary, Yannick; Mas, Virginie; Pujol, Claude (2009): Morphological variability of the planktonic foraminifer Neogloboquadrina pachyderma from ACEX cores: implications for late Pleistocene circulation in the Arctic Ocean. Micropaleontology, 55(2-3), 101-116
    Details
    Publication Date: 2023-06-27
    Description: Planktonic foraminifera populations were studied throughout the top 25 meters of the IODP ACEX 302 Hole 4C from the central Arctic Ocean at a resolution varying from 5cm (at the top of the record) to 10cm. Planktonic foraminifera occur in high absolute abundances only in the uppermost fifty centimetres and are dominated by the taxa Neogloboquadrina pachyderma. Except for a few intermittent layers below this level,most samples are barren of calcareous microfossils.Within the topmost sediments, Neogloboquadrina pachyderma specimens present large morphological variability in the shape and number of chambers in the finalwhorl, chamber sphericity, size, and coiling direction. Five morphotypeswere identified among the sinistral (sin.) population (Nps-1 to Nps-5), including a small form (Nps-5) that is similar to a non-encrusted normal form also previously identified in the modern Arctic Ocean watermasses. Twenty five percent of the sinistral population is made up by large specimens (Nps-2, 3, 4), with a maximal mean diameter larger than 250µm. Following observations made in peri-Arctic seas (Hillaire-Marcel et al. 2004, doi:10.1016/j.quascirev.2003.08.006), we propose that occurrence of these large-sized specimens of N. pachyderma (sin.) in the central Arctic Ocean sediments could sign North Atlantic water sub-surface penetration.
    Keywords: 302-M0004C; ACEX-M4C; Arctic Coring Expedition, ACEX; Arctic Ocean; Biogenic indeterminata; CCGS Captain Molly Kool (Vidar Viking); Counting 〉125 µm fraction; Depth, composite top; DEPTH, sediment/rock; Exp302; Foraminifera, planktic; Globigerina bulloides; Globigerina quinqueloba; Integrated Ocean Drilling Program / International Ocean Discovery Program; Intercore correlation; IODP; Neogloboquadrina atlantica; Neogloboquadrina pachyderma dextral; Neogloboquadrina pachyderma sinistral; Number; Sample code/label; Sample type; split; Split
    Type: Dataset
    Format: text/tab-separated-values, 943 data points
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