TGS Russia- Chukotka Peninsula and s=Surrounding Areas
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WWW.TGS.COM © 2013 TGS-NOPEC GEOPHYSICAL COMPANY ASA. ALL RIGHTS RESERVED. Research Objectives The study area is located in the northeastern Asia and consists of the Late Mesozoic Chukotka Fold-and-Thrust Belt, which is believed to be formed as a result Mesozoic convergence, and following collision of the Arctic Alaska-Chukchi Microplate (AACM) with the Omolon- Siberian margin in the course of the Canada oceanic basin formation. The deformed rocks are overlain by Aptian-Albian sedimentary successions and the Late Cretaceous Okhotsk-Chukotka Volcanic Belt (Fig. 1). Most of these tectonic units extend further north to form a basement of the offshore South Chukchi Sedimentary Basin filled in with the uppermost Lower Cretaceous and younger rocks. During the past decade, numerous geological and geophysical studies were carried out in this region by Russian and international research teams, including structural, lithostratigraphic, U-Pb dating of intrusions and detrital zircons, and zircon fission track studies of sedimentary rocks, as well as chemical and isotopic dating of magmatic rocks. The available data can be used to shed more light on the AACM formation and evolution. However, the important data on the post-collisional Late Cretaceous and Cenozoic evolution of the study area are still missing, and so the geological history of the large South Chukchi and North Chukchi sedimentary basins cannot be fully understood. TGS | CHUKOTKA PENINSULA AND SURROUNDING AREAS 2013 CHUKOTKA PENINSULA AND SURROUNDING AREAS A Regional Geological Study
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Transcript of TGS Russia- Chukotka Peninsula and s=Surrounding Areas
WWW.TGS.COM © 2013 TGS-NOPEC GEOPHYSICAL COMPANY ASA. ALL RIGHTS RESERVED.
Research ObjectivesThe study area is located in the northeastern Asia and consists of the Late Mesozoic Chukotka Fold-and-Thrust Belt, which is believed to be formed as a result Mesozoic convergence, and following collision of the Arctic Alaska-Chukchi Microplate (AACM) with the Omolon-Siberian margin in the course of the Canada oceanic basin formation. The deformed rocks are overlain by Aptian-Albian sedimentary successions and the Late Cretaceous Okhotsk-Chukotka Volcanic Belt (Fig. 1). Most of these tectonic units extend further north to form a basement of the offshore South Chukchi Sedimentary Basin filled in with the uppermost Lower Cretaceous and younger rocks.
During the past decade, numerous geological and geophysical studies were carried out in this region by Russian and international research teams, including structural, lithostratigraphic, U-Pb dating of intrusions and detrital zircons, and zircon fission track studies of sedimentary rocks, as well as chemical and isotopic dating of magmatic rocks. The available data can be used to shed more light on the AACM formation and evolution. However, the important data on the post-collisional Late Cretaceous and Cenozoic evolution of the study area are still missing, and so the geological history of the large South Chukchi and North Chukchi sedimentary basins cannot be fully understood.
TGS | CHUKOTKA PENINSULA AND SURROUNDING AREAS 2013
CHUKOTKA PENINSULA AND SURROUNDING AREAS
A Regional Geological Study
Payments
Advanced payment: 40% within 30 days from signing of the Licensing Agreement
Intermediate payment 30% within 30 days from the Intermediate Report delivery
Final payment: 30% within 30 days from the Final Report delivery
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CHUKOTKA PENINSULA
Research ObjectivesThe main goals of the project are:
� To produce comprehensive compilation of the existing geological, geophysical and geochemical data over Chukotka region of NE Russia, and adjacent AACM areas of Alaska to combine them in the unique database;
� To accomplish modern analytical studies of the rocks from the key localities using state-of-art methods. The main attention will be paid to the apatite fission track analysis of Paleozoic and Mesozoic rocks to identify and quantify the most recent cooling/
uplift/erosion history that will help to unravel evolution of adjacent offshore sedimentary basins. However, key samples for understanding evolution of the Chukotka Peninsula and adjacent areas will be studied by other methods (U-Pb detrital zircon dating, mineralogical, chemical, RockEval, etc. studies) as well;
� To produce a model of tectonic and sedimentary evolution of the study area with reference to events that may be recognized in the South- and North Chukchi sedimentary basins and their basement
DeliverablesIntermediate and final reports will be presented.
The Intermediate Report will be presented in 6 months after signing of the Licensing Agreement. It contains Tectono-stratigraphic correlation charts based on available data from papers and open-file reports, location map, data of available laboratory studies, and short explanation text.
The Final Report will contain a tectonic overview of the study area, litho-stratigraphy of the Neoproterozoic to Cenozoic sedimentary successions, characterization of the tectonic and depositional
events, structural styles, paleogeography, correlation of the tectonostratigraphy of the Chukotka with adjacent Alaska and Wrangel Island. The laboratory analytical studies will be focused on the apatite fission track analysis, but will also include mineralogical analysis of heavy minerals, detrital zircon geochronology, zircon fission track analysis, non-organic isotopic & chemical analyses, RockEval analysis and vitrinite reflectance measurements. The Report will be accompanied with an ArcGIS database, and a series of enclosures, such as tectonostratigraphic charts, cross-sections, geologic and paleogeographic maps, etc.
Data Sources � The numerous Russian papers and the open-file geological
reports as well as international papers and USGS reports on geology of the AACM
� Geological data collected by the project team during last 15 years on Chukotka Peninsula and Wrangel Island and not published yet including both field observations and laboratory studies
� Approximately 100 samples (see location in Fig. 1), and hundreds of thin sections of predominantly Mesozoic rocks from Chukotka Fold-and-Thrust Belt, Okhotsk-Chukotka Volcanic Belt, South Anyui Suture Zone, and Wrangel Island available for the research team
Timing and Cost � Published and open-file reports data compilation, and the
Intermediate report after 6 months � Analytical studies, data compilation, and the Final Report
production will take 12 months; � Total cost of the study will be 160 KUSD
Payments � Published and open-file reports data compilation, and the
Intermediate report after 6 months � Analytical studies, data compilation, and the Final Report
production will take 12 months; � Total cost of the study will be 160 KUSD
TGS | CHUKOTKA PENINSULA AND SURROUNDING AREAS 2013
Geological map of the South Anyui suture zone and adjacent tectonic domains. Approximate location of the fieldwork area is shown in red. CH – Chukotka Fold-and-Thrust Belt, Al-OL – Alazeya-Oloi fold zone, SAS – South Anyui Suture Zone, OC – Okhotsk-Chukotka Volcanic Belt, YR - Yarakvaam terrane, Al – Aluchin terrane, Pn – Pen’velveem uplift
SOUTH ANYUI SUTURE ZONE
Research ObjectivesThe South Anyui suture zone contains record of collisional processes occurred on the southwestern margin of the AACM and likely is the youngest tectonic unit in the basement of the Chukotka and East Siberian seas. Its cooling/uplift/erosion most likely was accompanied, at least partly, by transport and sedimentation of erosion products in the South Chukchi sedimentary basin. Study of its cooling/uplift/erosion history will supply with data that help to understand early stages of the South Chukchi sedimentary basin formation.Although some samples from the South-Anyui suture zone area are available and will be studied as a part of the CHUKOTKA PENINSULA AND SURROUNDING AREAS: A REGIONAL GEOLOGICAL STUDY project, their number is small and is sufficient for only reconnaissance study. Therefore, fieldtrip-2014 to the South Anyui suture zone and adjacent overlapping sedimentary basins is suggested to verify their Mesozoic history and to expand samples collection.
A new set of samples from key areas for thin section, mineralogical, detrital zircon age distribution, apatite and zircon fission track, non-organic isotopic & chemical, RockEval and vitrinite reflection studies will be collected. Although the main targets of field study are clastic rocks, a few syn- and post-tectonic intrusions may be studied to identify age and composition of possible provenance of clastic rocks in the adjacent onshore and offshore sedimentary basins. Location of the field study area is shown in Figure 2.The proposed option is a continuation of the project “CHUKOTKA PENINSULA AND SURROUNDING AREAS: A REGIONAL GEOLOGICAL STUDY” and may partly overlap with it in time, but cannot be done separately from it.
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TGS | CHUKOTKA PENINSULA AND SURROUNDING AREAS 2013
WWW.TGS.COM © 2013 TGS-NOPEC GEOPHYSICAL COMPANY ASA. ALL RIGHTS RESERVED.
SOUTH ANYUI SUTURE ZONE
TGS | CHUKOTKA PENINSULA AND SURROUNDING AREAS 2013
Timing and Cost
TGSTel: +47 66 76 99 00 Email: [email protected]
Clapton Research Geology, Project Leader Andrei Khudoley Tel: +7-921-7573876 Email: [email protected]
For more information, contact
Payments
Advanced payment: 50% within 30 days from signing of the Licensing Agreement
Intermediate payment 20% within 30 days from the Intermediate Report delivery
Final payment: 30% within 30 days from the Final Report delivery
If Additional option is selected, the Licensing Agreement has to signed not later than in March 2014 with first payment not later than in April 2014.
� April – October 2014: Published and open-file reports data compilation with the Intermediate Report in October 2014
� November 2014 – March 2015: Analytical studies, data compilation with the Final Report in March 2015;
� Total cost of the study will be 260 KUSD
Payments
