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Format
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GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Africa
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Congo Craton (1)
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East Africa
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Kenya
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Mount Kenya (1)
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North Africa
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Algeria (2)
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Atlas Mountains
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Egypt (4)
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Libya
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Morocco
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Moroccan Atlas Mountains
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Anti-Atlas (1)
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Sahara (2)
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Southern Africa
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Karoo Basin (3)
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Namibia (5)
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West Africa
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Guinea (1)
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Togo (1)
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Anvers Island (1)
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Asia
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Quebec
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Hudson Bay (6)
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Karelia Russian Federation (1)
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Insecta
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Echinodermata
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Protista
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Cassidulinacea
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Cassidulina (1)
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Orbitoidacea
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Textulariina
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Stone Age
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Dalradian (1)
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Mesozoic
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Cretaceous
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MIS 2 (2)
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Paleozoic
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Carboniferous
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Mississippian
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Serpukhovian (1)
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Devonian
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Permian
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Lower Permian
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Upper Permian
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Kazanian (1)
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Zechstein (1)
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Whitehill Formation (1)
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Silurian
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Lower Silurian
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Llandovery
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Qalibah Formation (1)
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Upper Silurian
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Ludlow (1)
-
-
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upper Paleozoic
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Antrim Shale (1)
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Dwyka Formation (7)
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Phanerozoic (1)
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Cryogenian (3)
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Sinian
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Tapley Hill Formation (1)
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igneous rocks
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orthosilicates
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sheet silicates
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illite (1)
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sulfates
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sulfides (1)
-
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Primary terms
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absolute age (214)
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Africa
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North Africa
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GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
deglaciation
Glacial events and continental weathering evolution of syn-, inter-, and post-glaciation during the middle–late Neoproterozoic period in the southwestern Tarim Craton, China Available to Purchase
Exploring the impact of deglaciation on fault slip in the Sangre de Cristo Mountains, Colorado, USA Available to Purchase
Anatomy of a 300 Myr old fjord in Namibia Open Access
Glacial Lake Dynamics in Dibang Valley District, Arunachal Pradesh, Eastern Himalaya Available to Purchase
Preservation of probable MIS 7 deglacial and nonglacial deposits near the edge of the Hudson Bay Lowland in Manitoba, Canada Open Access
Quaternary: glaciations, sea-level change and palaeoenvironmental reconstruction Available to Purchase
Glacially influenced provenance and Sturtian affinity revealed by detrital zircon U–Pb ages from sandstones in the Port Askaig Formation, Dalradian Supergroup Open Access
Glacier Changes and Fragmentation in Birahi Ganga Basin, Garhwal Himalaya: Implications for Water Resources Available to Purchase
Paleomagnetic investigation of the basal Maieberg Formation (Namibia) cap carbonate sequence (635 Ma): Implications for Snowball Earth postglacial dynamics Available to Purchase
Assessing the performance of a radioactive waste repository over geological timescales: past experience and the way forward Available to Purchase
Summer warming during Heinrich Stadial 1 in Northeast China Open Access
Laurentide Ice Sheet configuration in southern Ontario, Canada during the last glaciation (MIS 4 to 2) from stratigraphic drilling and LIDAR-based surficial mapping Open Access
Late history of glacial Lake Agassiz in northwestern Ontario, Canada: a case study in the Sandy Lake basin Open Access
Where ice gave way to fire: deglacial volcanic activity at the edge of the Coast Mountains in Milbanke Sound, BC Open Access
Seismic reflection stratigraphy of Lac Simard, Quebec, Canada: mass flow sedimentation in glacial Lake Barlow-Ojibway Available to Purchase
Pennsylvanian glacial cycles in western Gondwana: an overview Available to Purchase
Abstract The Pennsylvanian on the western rim of Gondwana can be considered a time of significant contrasts in terms of environments, revealing a unique translatitudinal disposition of the South American continent, where glaciomarine deposits and peat-forming environments, situated further south, coexisted with marine carbonate platforms and aeolian dune fields, in terrains further north. This peculiar record creates an opportunity to better understand the teleconnections of glaciation and deglaciation during the Late Paleozoic Ice Age (LPIA) between mid and low latitude regions. In the last decade, radiometric dating together with marine microfossils (mostly conodonts) has enabled a better understanding of the timing and duration of deposition of different sedimentary environments found in the climate belts that originated from a global ice-house regime. These advances in the chronostratigraphical positioning of sedimentary deposits also allow a more precise correlation between them, making it possible to estimate cause–effect patterns arising from the growth and decay of glaciers in this portion of Gondwana. This contribution aims to present an overview of the main climatic–environmental events that took place during the Pennsylvanian and to associate them with the floristic changes that occurred in the emergent lands based on palaeobotanic and palynological information. The record from the west rim of Gondwana could be roughly divided into Early, Middle and Late Pennsylvanian, exactly as proposed in the geological time-scale.
A Carboniferous apex for the late Paleozoic icehouse Available to Purchase
Abstract Icehouse climate systems occur across an abbreviated portion of Earth history, constituting c. 25% of the Phanerozoic record. The Late Paleozoic Ice Age (LPIA) was the most extreme and longest lasting glaciation of the Phanerozoic and is characterized by periods of acute continental-scale glaciation, separated by periods of ice minima or ice-free conditions on the order of <10 6 years. The late Paleozoic glaciogenic record of the Paraná and Kalahari basins of southern Gondwana form one of the largest, best-preserved and well-calibrated records of this glaciation. In the Carboniferous, the eastern and southern margins of the Paraná Basin and the Kalahari Basin were characterized by subglacial conditions, with evidence for continental and upland glaciers. In the latest Carboniferous, these basins transitioned from subglacial reservoirs to ice-free or ‘ice distal‘ conditions evidenced by the widespread deposition of marine deposits juxtaposed on subglacial bedforms. High-precision U–Pb zircon chemical abrasion thermal ionization mass spectrometry geochronological constraints from volcanic ash deposits in the deglacial marine black shales of the Kalahari Basin and from fluvial and coal successions, which overlie marine deposits in the Paraná Basin, indicate subglacial evidence in these regions is constrained to the Carboniferous. The loss of ice in these regions is congruent with a late Carboniferous peak in p CO 2 and widespread marine anoxia in the late Carboniferous. The permeant retreat of glaciers in basinal settings, despite an early Permian p CO 2 nadir, highlights the influence of short-term perturbations on the longer-term CO 2 record and suggests an ice threshold had been crossed in the latest Carboniferous. A definitive driver for greenhouse gases in the LPIA, such as abundant and sustained volcanic activity or an increased biological pump driven by ocean fertilization, is unresolved for this period. Lastly, the proposed Carboniferous apex for the high-latitude LPIA record is incongruent with observations from the low-latitude tropics where an early Permian peak is proposed.
Laurentide Ice Sheet persistence during Pleistocene interglacials Available to Purchase
Rapid southeastern Laurentide Ice Sheet thinning during the last deglaciation revealed by elevation profiles of in situ cosmogenic 10 Be Available to Purchase
High-resolution geological mapping towards an understanding of post-glacial development and Holocene sedimentation processes in the eastern Gulf of Finland: an EMODnet Geology case study Available to Purchase
Abstract Analyses of high-resolution multibeam and sub-bottom profiling data, acquired during marine geological field cruises between 2017 and 2019 in the eastern Gulf of Finland (Baltic Sea), enabled the detailed mapping of Quaternary deposits, and revealed diverse submerged glacial and post-glacial landforms (e.g. streamlined moraine ridges, large retreat moraine ridges, De Geer moraines and kettle holes). The morphology of these glacial features provides evidence of the ice-sheet retreat direction and rate throughout the deglaciation of the region, which occurred between 13.8 and 13.3 ka BP (Pandivere–Neva Stage) and 12.25 ka BP (Salpausselkä I Stage). Analysis of sub-bottom profiling, supported by piston long-core sampling, indicates periods of bottom erosion/non-deposition during the Holocene caused by relative water-level regressions. Significant negative relief features are also observed in the area for the first time. These linear and curved V-shaped furrows are several kilometres long and 5 m deep, and are tentatively ascribed to bottom current and gas-seepage processes.