All ICDP Publications with Abstracts
From parent-sysfolder "Publications" + 2 folder-levels deep
2294.
Operational report for the 2017 Surtsey underwater volcanic system for thermophiles, alteration processes and INnovative concretes (SUSTAIN) drilling project at Surtsey volcano, Iceland
2293.
Overview of modern atmospheric patterns controlling rainfall and floods into the Dead Sea: Implications for the lake's sedimentology and paleohydrology
Quaternary Science Reviews,
21658 – 73
2019
2292.
2291.
Paleoenvironmental Significance of Clay-sized Detrital Minerals of Late Cenozoic Sediments from the Lake Qinghai, China
Acta Geologica Sinica (English Edition),
93
(S2)
126-130
2019
ISSN: 10009515
Publisher: John Wiley and Sons Inc
Keywords:▾
Cenozoic; clay mineral; detritus; lacustrine deposit; paleoclimate; paleoenvironment; sediment chemistry, China; Qinghai; Qinghai Lake
2290.
Pattern of cell division in ∼3.4 Ga-old microbes from South Africa
Precambrian Research,
331
2019
2289.
Peering inside the peak ring of the Chicxulub Impact Crater—its nature and formation mechanism
Geology Today,
35
(2)
68-72
2019
Abstract: ▾ The IODP-ICDP Expedition 364 drilled into the Chicxulub crater, peering inside its well-preserved peak ring. The borehole penetrated a sequence of post-impact carbonates and a unit of suevites and clast-poor impact melt rock at the top of the peak ring. Beneath this sequence, basement rocks cut by pre-impact and impact dykes, with breccias and melt, were encountered at shallow depths. The basement rocks are fractured, shocked and uplifted, consistent with dynamic collapse, uplift and long-distance transport of weakened material during collapse of the transient cavity and final crater formation. © 2019 John Wiley & Sons Ltd, The Geologists' Association & The Geological Society of London
2288.
Petrography and geochemistry of the impact to postimpact transition layer at the El'gygytgyn impact structure in Chukotka, Arctic Russia
Meteoritics and Planetary Science,
54
(10)
2510-2531
2019
ISSN: 10869379
Publisher: University of Arkansas
Abstract: ▾ The 3.6 Ma El'gygytgyn impact structure, located in northeast Chukotka in Arctic Russia, was largely formed in acidic volcanic rocks. The 18 km diameter circular depression is today filled with Lake El'gygytgyn (diameter of 12 km) that contains a continuous record of lacustrine sediments of the Arctic from the past 3.6 Myr. In 2009, El'gygytgyn became the focus of the International Continental Scientific Drilling Program (ICDP) in which a total of 642.4 m of drill core was recovered. Lithostratigraphically, the drill cores comprise lacustrine sediment sequences, impact breccias, and deformed target rocks. The impactite core was recovered from 316.08 to 517.30 meters below lake floor (mblf). Because of the rare, outstanding recovery, the transition zone, ranging from 311.47 to 317.38 m, between the postimpact lacustrine sediments and the impactite sequences, was studied petrographically and geochemically. The transition layer comprises a mixture of about 6 m of loose sedimentary and volcanic material containing isolated clasts of minerals and melt. Shock metamorphic effects, such as planar fractures (PFs) and planar deformation features (PDFs), were observed in a few quartz grains. The discoveries of silica diaplectic glass hosting coesite, kinked micas and amphibole, lechatelierite, numerous impact melt shards and clasts, and spherules are associated with the impact event. The occurrence of spherules, impact melt clasts, silica diaplectic glass, and lechatelierite, about 1 m below the onset of the transition, marks the beginning of the more coherent impact ejecta layer. The results of siderophile interelement ratios of the transition layer spherules give indications of the relative contribution of the meteoritical component. © 2019 The Authors. Meteoritics & Planetary Science published by Wiley Periodicals, Inc. on behalf of The Meteoritical Society (MET).
2287.
Petrophysical characteristics of Huoshiling Formation from CCSD SK- 2 in the Songliao Basin of Northeast China [松科二井火石岭组地层岩石物理学特征研究]
Geology in China,
46
(5)
1161-1173
2019
ISSN: 10003657
Publisher: Science Press
Abstract: ▾ The Continental Scientific Drilling Project in the Songliao Basin was aimed at solving a series of scientific problems involved in Cretaceous paleoclimate and paleoenvironmental research, the development of deep exploration techniques, and the earth's deep resource survey. As the main borehole of the scientific drilling project of Songliao Basin, SK- 2 has collected continuous and in- situ geophysical log data. In this paper, geophysical log data were used to reveal the range of petrophysical parameters of rocks in Huoshiling Formation. Combined with laboratory core NMR test analysis, the authors studied the pore structure characteristics of different igneous reservoirs. The results show that the Huoshiling Formation mainly consists of andesite, tuff, complex conglomerate and tuff mudstone. The igneous facies are dominated by the explosive facies and the effusion facies. The andesite and complex conglomerate are characterized by high resistivity and low acoustic wave time difference. The characteristics of the tuff are low resistivity and high acoustic time difference, and the tuff mudstone has the lowest resistivity. The reservoir has the characteristics of low porosity and low permeability, but the tuff reservoir has developed small and medium pores and has relatively good physical properties, and hence it is a favorable reservoir. The research results provide strong support for further evaluation of deep oil and gas resources and stratigraphic structure in the Songliao Basin. © 2019 Editorial Board of Geology in China. All rights reserved.
2286.
Petrophysical characteristics of Huoshiling Formation from CCSD SK- 2 in the Songliao Basin of Northeast China; [松科二井火石岭组地层岩石物理学特征研究]
Geology in China,
46
(5)
1161 – 1173
2019
ISSN: 10003657
Publisher: Science Press
Abstract: ▾ The Continental Scientific Drilling Project in the Songliao Basin was aimed at solving a series of scientific problems involved in Cretaceous paleoclimate and paleoenvironmental research, the development of deep exploration techniques, and the earth's deep resource survey. As the main borehole of the scientific drilling project of Songliao Basin, SK- 2 has collected continuous and in- situ geophysical log data. In this paper, geophysical log data were used to reveal the range of petrophysical parameters of rocks in Huoshiling Formation. Combined with laboratory core NMR test analysis, the authors studied the pore structure characteristics of different igneous reservoirs. The results show that the Huoshiling Formation mainly consists of andesite, tuff, complex conglomerate and tuff mudstone. The igneous facies are dominated by the explosive facies and the effusion facies. The andesite and complex conglomerate are characterized by high resistivity and low acoustic wave time difference. The characteristics of the tuff are low resistivity and high acoustic time difference, and the tuff mudstone has the lowest resistivity. The reservoir has the characteristics of low porosity and low permeability, but the tuff reservoir has developed small and medium pores and has relatively good physical properties, and hence it is a favorable reservoir. The research results provide strong support for further evaluation of deep oil and gas resources and stratigraphic structure in the Songliao Basin. © 2019 Editorial Board of Geology in China. All rights reserved.
2285.
Research and application of while drilling temperature measurement technology under high temperature and high pressure in Well Songke-2; [松科二井高温高压随钻测温技术的应用研究]
Geology in China,
46
(5)
1193 – 1199
2019
ISSN: 10003657
Publisher: Science Press
Abstract: ▾ Well Songke-2 is the deepest continental scientific drilling carried out by Asian countries. The logging temperature of Well Songke-2 Songke-2 was 241 °C after drilling for 38 hours, which created the highest well temperature application record of drilling engineering in China. The parameters of Well Songke-2 are mainly tested in two ways: one is integrated logging before casing, whereas the other is downhole parameter measurement while drilling which does not affect normal drilling work. Timely grasping the information such as the temperature while drilling plays a key supporting role in the adjustment of high temperature mud performance and the application of power tools. The authors carried out a series of researches on the problem of high temperature in Well Songke-2, and developed a storage type measurement while drilling instrument. The instrument was improved and designed through multiple rounds of research and finally it has been successfully applied to Well Songke-2. © 2019 Editorial Board of Geology in China. All rights reserved.
2284.
Understanding volcanic facies in the subsurface: A combined core, wireline logging and image log data set from the PTA2 and KMA1 boreholes, Big Island, Hawaii
Scientific Drilling,
2515-33
2019
ISSN: 18168957
Publisher: Copernicus GmbH
Keywords:▾
Coremaking; Image enhancement; Magnetic susceptibility; Thermal logging; Volcanoes, Borehole logging; Comprehensive analysis; Facies analysis; Full diameter core; Geophysical data; High resolution; Volcanic facies; Wireline logging, Boreholes
Abstract: ▾ To help understand volcanic facies in the subsurface, data sets that enable detailed comparisons between down-hole geophysical data and cored volcanic intervals are critical. However, in many cases, the collection of extended core intervals within volcanic sequences is rare and often incomplete due to challenging coring conditions. In this contribution we outline and provide initial results from borehole logging operations within two fully cored lava-dominated borehole sequences, PTA2 and KMA1, on the Big Island of Hawai`i. Data for spectral gamma, magnetic susceptibility, dipmeter resistivity, sonic, total magnetic field, temperature and televiewer wireline logs were successfully acquired for the open hole interval ca. 889 m to 1567 m within the PTA2 borehole. Spectral gamma was also collected from inside the casing of both wells, extending the coverage for PTA2 to the surface and covering the interval from ca. 300 to 1200 m for KMA1. High-quality core material was available for both boreholes with almost complete recovery which enabled high-resolution core-to-log integration. Gamma data are generally low commonly in the range ca. 7-20 gAPI but are shown to increase up to API of ca. 60 with some intrusions and with increases in hawaiite compositions in the upper part of PTA2. Velocity data are more variable due to alteration within porous volcanic facies than with burial depth, with a general degrease down-hole. The high-resolution televiewer data have been compared directly to the core, enabling a comprehensive analysis of the variations in the televiewer responses. This has enabled the identification of key features including individual vesicles, vesicle segregations, strained vesicles, chilled margins, rubble zones, intrusive contacts and pāhoehoe lobe morphologies, which can be confidently matched between the televiewer data and the full diameter core. The data set and results of this study include findings which should enable improved borehole facies analysis through volcanic sequences in the future, especially where down-borehole data and images but no core are available. © Author(s) 2019.
2283.
Scientific drilling across the shoreline
Oceanography,
32
(1)
157-159
2019
ISSN: 10428275
Publisher: Oceanography Society
Abstract: ▾ Shorelines are ephemeral features, yet many science problems cross this ever-moving boundary and require sampling on both its dry and wet sides. The logistics of working on land and at sea are distinct, such that funding agencies in many countries divide their research programs at the shoreline. Similarly, scientific drilling is split between the International Ocean Discovery Program (IODP) in the ocean and the International Continental Scientific Drilling Program (ICDP) on land. Here, we discuss three examples of drilling projects that effectively coordinated activities between IODP and ICDP and highlight the need for increasing cooperation and coordination across the shoreline. We end by casting an eye toward the future of scientific drilling, where truly amphibious projects are now possible. © 2019 The Oceanography Society, Inc.
2282.
[English]
Limited off-set consideration in de-multiple process of seismic Lake Towuti
Volume 279
,
In Azis M.I.,
Editor
Publisher
Institute of Physics Publishing
2019
Keywords:▾
Metamorphic rocks; Sediments; Seismic prospecting; Seismic response; Seismic waves; Stratigraphy; Combination method; Common reflection surfaces; Multiple attenuation; Predictive deconvolution; Seismic processing; Seismic recording; Subsurface images; Surface-related multiple elimination; Lakes
2281.
Volcanic stratigraphy and age model of the Kimama deep borehole (Project Hotspot): Evidence for 5.8 million years of continuous basalt volcanism, central Snake River Plain, Idaho
Geosphere,
15
(3)
736 – 758
2019
ISSN: 1553040X
Publisher: Geological Society of America
Keywords:▾
Idaho; Snake River Plain; United States; Basalt; Binary alloys; Boreholes; Boring; Drills; Gamma rays; Geomagnetism; Infill drilling; Lead alloys; Neutron logging; Plastic flow; Rivers; Sediments; Silicate minerals; Stratigraphy; Uranium alloys; Volcanoes; Zircon; Accumulation rates; Basaltic volcanism; Heating experiment; Lithosphere mantle; Magnetostratigraphy; Paleosecular variations; Snake river plains; Volcanic activities; basalt; borehole; continental crust; facies; lava flow; lithology; magnetic reversal; magnetostratigraphy; paleomagnetism; volcanism; Core drilling
Abstract: ▾ The Snake River Plain of central Idaho represents the world's best example of a mantle hotspot track impinging upon continental crust and provides a record of bimodal volcanism extending over 12 Ma to the present. Project Hotspot recovered almost 2 km of continuous drill core from the Kimama borehole, located in central Idaho on the axial volcanic zone. The Kimama drill core represents the most complete record of mafic volcanism along the Yellowstone-Snake River Plain hotspot track. A total of 432 basalt flow units, representing 183 basalt flows, 78 basalt flow groups, and 34 super groups, along with 42 sediment interbeds are recognized using volcanic facies observations, stratigraphic relationships, borehole geophysical logs, and paleosecular variation in magnetostratigraphy. Rhyolite and other non-basaltic volcanic materials were not encountered in the drill core. Ages for six basalt lava flows were determined by 40Ar/39 using incremental heating experiments. Paleomagnetic inclination was measured on over 1200 samples collected at roughly 2-m-depth intervals, yielding mean values of paleosecular variation between ±50° to ±70° in Kimama flow groups, close to the expected 61° axial dipole average for the Kimama borehole location. Twenty-three magnetic reversals were identified and correlated to dated geomagnetic chrons and subchrons and compared with the 40Ar/39 radiometric ages. A linear fit to 40Ar/39Ar dates, geomagnetic chron and subchron boundaries, and volcanogenic zircon U-Pb ages defines a mean accumulation rate of ~320 m/m.y. and extrapolates to a bottom hole age of 6.3 Ma. Average thicknesses of lithologic units increase from 2.7 m (sediment), 4 m (flow units), 10 m (flows), 23 m (flow groups), to 53 m (super groups). On average, one lava flow inundated the Kimama borehole location every 33 k.y. Intercalated sediments, ranging from 0.06 to 24.5 m thick, make up roughly 6% of the drill core and indicate lulls in local volcanic activity that may have lasted up to 77 k.y. Neutron and gamma-ray logs supplement observations from the drill cores: neutron logs document individual flow units through the contrast between massive flow interiors and more porous flow surfaces, and gamma-ray logs document the depth and thickness of sedimentary interbeds and high-K-Fe basalts. The 5.8 m.y. duration of basaltic volcanism in the Kimama drill core implies a steady rate of volcanism, indicating a relatively stable rate of mantle upflow along the lithosphere-mantle boundary in the wake of Yellowstone-Snake River Plain plume volcanism. © 2019 The Authors.
2280.
δ13C records from fish fossils as paleo-indicators of ecosystem response to lake levels in the Plio-Pleistocene lakes of Tugen Hills, Kenya
Palaeogeography, Palaeoclimatology, Palaeoecology,
534
2019
ISSN: 00310182
Publisher: Elsevier B.V.
Keywords:▾
Baringo; East African Lakes; East African Lakes; East African Rift; Kenya; Lake Malawi; Lake Turkana; Tugen Hills; carbon isotope; climate variation; ecosystem response; fish; fossil record; habitat type; lake level; organic matter; paleoclimate; paleoecology; paleoenvironment; Pliocene-Pleistocene boundary; shallow water
Abstract: ▾ The carbon isotopic ratios of organic matter in fish fossils from diatomites and other lake beds in the HSPDP drill core from Tugen Hills, Kenya (2.56–3.29 Ma) reflect trophic resource uses, and can indicate the dietary habitats of fish in the paleolake. This information offers insight into how fish communities responded to lake-level fluctuations during the Plio-Pleistocene in the East African Rift Valley. We have compared this record with fish fossil isotopes from both a previously published study of a Lake Malawi drill core (139 ka–present) and core top (modern ca 1978) samples collected at the water/sediment boundary from Lake Turkana (Kenya) of known environmental provenance. Both the Lake Malawi drill core fossils (−7.2‰ to −27.5‰ VPDB) and modern Lake Turkana samples (−16‰ to −24.6‰ VPDB) have δ13C values indicating a mix of near-shore and deep-water pelagic species. In contrast, the δ13C values for the Tugen Hills core fossils vary only between −20‰ and −27‰ VPDB. The absence of δ13C values greater than −19‰, suggests none of these fossils are derived from near-shore benthic habitats. The lack of shallow water, benthic lacustrine fish fossils through the Tugen Hills lake cycles may indicate that the rate of change from low-lake stands to deeper lake phases was very rapid, and shallow water communities were not established for long enough to leave a fish fossil record at the core site. These results strongly suggest that lake level responses to climate variability in the Baringo basin of the East African Rift were very abrupt during the Plio-Pleistocene transition. © 2019 Elsevier B.V.
2279.
深井复合钻柱技术在特深科学钻探中的应用探讨
中国地质,
46
(5)
1200-1208
2019
2278.
Initial report of continental scientific drilling project of the Cretaceous Songliao Basin (SK-1) in China / Wang Chengshan, [and 3 others], et al.
Publisher
Elsevier
,
Amsterdam, The Netherlands ; Cambridge, MA
2019
ISBN:
9780128129289
2277.
The gulf of Mexico sedimentary basin: Depositional evolution and petroleum applications
2019
2276.
[English]
Gas hydrate production testing - Knowledge gained
Volume 2019-May
,
Publisher
Offshore Technology Conference
2019
U.S. Geological Survey, United StatesDOI:10.4043/29516-ms
Keywords:▾
Gas engineering; Gases; Hydration; Offshore oil well production; Offshore technology; Permafrost; Renewable energy resources; Submarine geology; Well completion, Completion technology; Depressurization methods; Engineering controls; Gas-hydrate production; Hydrate accumulations; Molecular substitution; Production technology; Unconventional natural gas, Gas hydrates
ISBN:
9781613996416
2275.
Spatial variation in stress in seismogenic zones in south african gold mines
Page 39 – 44
2019
2274.
Varves of the Dead Sea sedimentary record
Quaternary Science Reviews,
215173-184
2019
ISSN: 02773791
Publisher: Elsevier Ltd
Keywords:▾
Budget control; Carbonate minerals; Chloride minerals; Climate change; Deposition; Drought; Lakes; Sedimentology; Sodium chloride, Deep drilling; Evaporitic varves; Hypersaline lakes; Lacustrine sediments; Palaeoclimate reconstruction; Varve chronologies, Sediments, chronology; deep drilling; drought; global climate; historical record; hypersaline environment; lacustrine deposit; marine sediment; paleoclimate; Pleistocene; reconstruction; sediment core; varve; water budget, Dead Sea; Levant; Mediterranean Region
Abstract: ▾ The sedimentary record of the Dead Sea provides an exceptional high-resolution archive of past climate changes in the drought-sensitive eastern Mediterranean-Levant, a key region for the development of humankind at the boundary of global climate belts. Moreover, it is the only deep hypersaline lake known to have deposited long sequences of finely laminated, annually deposited sediments (i.e. varves) of varied compositions, including aragonite, gypsum, halite and clastic sediments. Vast efforts have been made over the years to decipher the environmental information stored in these evaporitic-clastic sequences spanning from the Pleistocene Lake Amora to the Holocene Dead Sea. A general characterisation of sediment facies has been derived from exposed sediment sections, as well as from shallow- and deep-water sediment cores. During high lake stands and episodes of positive water budget, mostly during glacial times, alternating aragonite and detritus laminae (‘aad’ facies) were accumulated, whereas during low lake stands and droughts, prevailing during interglacials, laminated detritus (‘ld’ facies) and laminated halite (‘lh’ facies) dominate the sequence. In this paper, we (i) review the three types of laminated sediments of the Dead Sea sedimentary record (‘aad’, ‘ld’ and ‘lh’ facies), (ii) discuss their modes of formation, deposition and accumulation, and their interpretation as varves, and (iii) illustrate how Dead Sea varves are utilized for palaeoclimate reconstructions and for establishing floating chronologies. © 2019 Elsevier Ltd
2273.
2019 status report: Drilling into seismogenic zones of M2.0–M5.5 earthquakes in South African gold mines (DSeis project)
In Joughin W,
Editor
,
Deep Mining 2019: Proceedings of the Ninth International Conference on Deep and High Stress Mining
,
Page 375-384
In Joughin W,
Editor
Publisher
The Southern African Institute of Mining and Metallurgy
2019
2272.
Oxide gabbro intrusions of the dike-gabbro transition, Hole GT3A, Oman Drilling Project.
,
Geophysical Research Abstracts
Volume21
2019
2271.
Tethyan anhydrite preserved in the lower crust of the Samail ophiolite: Evidence from Oman Drilling Project Holes GT1A and 2A.
,
Geophysical Research Abstracts
Volume21
2019
2270.
The Oman Drilling Project--Overview and Initial Results.
,
Geophysical Research Abstracts
Volume21
2019