SMP32ADMAP2.0 & Connecting Geology and Geophysics in Antarctica (public)
|Convener: Fausto Ferraccioli|
Wed, 26 Apr, 13:30–15:00
Antarctica is a keystone for reconstructing the Gondwana, Rodinia and Columbia supercontinent cycle. Understanding Antarctic geology is also critical to enhance our knowledge of geological controls on the Antarctic bedrock and its influence on past, present and future ice sheet behaviour.
Magnetic surveying is a key tool to expand our knowledge of Antarctic geology and crustal architecture. Since the publication of the first Antarctic magnetic anomaly compilation (Golynsky et al., 2001) endorsed by the Scientific Committee on Antarctic Research (SCAR), the geomagnetic community has acquired ca 2 ML line-km of new air- and ship-borne data. The increased international dimension of aerogeophysical surveys has enabled major Antarctic frontiers, such as the Gamburtsev Subglacial Mountains, the Aurora Subglacial Basin and the Amundsen Sea Embayment to be explored.
In the first part of this splinter meeting we will review the status of the ADMAP 2.0 project, initiated in August 2013, and which is now close to its planned completion. We plan to discuss a draft of an international data release paper that we aim to publish by the end of 2017. Brief presentations showcasing post ADMAP 2.0 (i.e. post 2013) surveys are also welcome and preliminary discussions towards ADMAP 2.1 (currently planned for 2019-2020) will then take place. ADMAP2.0 will form a major contribution for an update of the next generation World Digital Magnetic Anomaly Map and we welcome representatives of the global geomagnetic community to report on our activities and linkages.
In the second part of this splinter meeting the Connecting Geology and Geophysics (CGG) group of SCAR will discuss its activities and plans. While significant progress has been made in geophysical exploration and data compilations (e.g. ADMAP 2.0, AntGG and Bedmap2) in recent years, a tighter connection between geology and geophysics requires further joint research on behalf of both communities. Hence we plan to address areas where detailed geological field studies and focussed geophysics have already been or are planned to be carried out in order to understand the geologic significance of major geophysical lineaments and the tectonic and geodynamic context of the different tectonic provinces and geophysical domains. In detail we propose to discuss: -High priority areas where lineaments and/or proposed tectonic boundaries intersect with outcrops; -Coordination and development of multinational joint capabilities in geophysics and geology; - Launching future international expeditions t o key areas; Improved geological mapping, also in logistically demanding areas;- Identifying candidate drill sites for basement sample recovery and connections to other drilling communities; Improving connections to adjacent continents within Gondwana, Rodinia and Columbia.