RSES Seminar: Dr Carmine Wainman – Late Cretaceous turmoil in the southern high latitudes

Join ANZIC for this special hybrid RSES Seminar featuring Dr Carmine Wainman, Basin Analyst at Geoscience Australia, as he explores what we’ve learned from IODP Site U1512 in the Bight Basin. The event will be held in the Jaeger 1 Seminar Room at the ANU Research School of Earth Sciences, ANU Acton campus. Join us there at 4pm on Tuesday 11 October and connect with Dr Wainman and the ANZIC team over free pizza and refreshments, or follow the link to attend online.

Biography

Dr Carmine Wainman holds an MSci in Geology from the University of Southampton, UK and a PhD in Geosciences from the University of Adelaide. He currently works at Geoscience Australia since November 2021 as a Basin Analyst in the Advice, Investment Attraction and Analysis Branch in the Minerals, Energy and Groundwater Division and is a Fellow of the Geological Society of London. Carmine has over nine years of industry and research experience both in Australia and the UK including with the RSK Group, Woodside Energy and the University of Adelaide. He participated on the International Ocean Discovery Program Expedition 369 in late 2017, investigating Australian Cretaceous climate and tectonics.

Abstract

Five years ago, the International Ocean Discovery Program Expedition 369 was in the middle of drilling at hole at Site U1512 in the Great Australian Bight. Despite the recovery of a near-complete 700 m succession of silty claystone, the core yielded few secrets as to what it represented, much to the frustration of everyone on board at the time. The core subsequently lost attention with more impressive results emanating from drill sites in the Mentelle Basin. However, subsequent multi-disciplinary analysis of the core has revealed a rich, comprehensive story of marginal marine settings in the southern high latitudes and the response of the Bight Basin to the Cretaceous Greenhouse. 

In this talk, Dr Wainman will share the latest findings of the lower Turonian to upper Santonian silty claystone succession, including what it can tell us about environmental instability in the basin and fluctuating sedimentary provenance as Australia slowly broke away from Antarctica. The talk will also explore life on board the JOIDES Resolution during the two-month expedition and the importance of continuing the scientific ocean drilling program from an ECR’s perspective.

Click here to find out more and access the live stream.

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IODP Expedition Call 402: Tyrrhenian Continent-Ocean Transition

APPLICATION DEADLINE: 1 December 2022

Applications are invited from scientists in IODP-participating countries to join the Science Party for IODP Expedition 402: Tyrrhenian Continent-Ocean Transition, taking place from 9 February – 8 April 2024 onboard JOIDES Resolution. View the Expedition 402 webpage

Background

Expedition 402 will investigate the temporal and spatial evolution of a continent-ocean transition (COT), from breakup to robust magmatism and subsequent mantle exhumation with closely time-related magmatism. The Tyrrhenian Basin is the youngest basin of the western Mediterranean Sea, forming in the late Miocene to recent by continental extension related to rollback of the ESE-SE migrating Apennine subduction system. Its basement has been dredged along bathymetric highs and the stratigraphy is reasonably well known from three prior drilling expeditions (DSDP Legs 13 and 42 and ODP Leg 107). 

Recent geophysical and seismic data support the presence of magmatic rocks formed during the early COT phase, and of subsequently exhumed mantle. The youth of the basin results in a modest sediment cover which facilitates sampling of the peridotitic and magmatic basement across the conjugated COT of the basin with unprecedented spatial resolution. Expedition 402 will target six sites along a west-east and north-south transect, with drill cores recovering peridotitic basement at each site, followed by downhole logging.

Scientific objectives

The recovered material and data from Expedition 402 will address five primary scientific objectives:

  1. Determine the kinematics and geometry in space and time of the extensional deformation in the basin.
  2. Establish the timing and origin of the associated magmatism.
  3. Establish the rheology, deformation patterns and timing of mantle exhumation.
  4. Determine the compositional evolution and heterogeneity of the mantle source.
  5. Test current models of continental lithosphere rifting and of COT formation.

For more information on the expedition science objectives and the JOIDES Resolution expedition schedule, see http://iodp.tamu.edu/scienceops/. This site includes links to individual expedition web pages with the original IODP proposals and expedition planning information. 

Who should apply

We encourage applications from all qualified scientists. The JOIDES Resolution Science Operator (JRSO) is committed to a policy of broad participation and inclusion, and to providing a safe, productive, and welcoming environment for all program participants. Opportunities exist for researchers (including graduate students) in all shipboard specialties, including micropaleontologists, sedimentologists, petrologists, igneous geochemists, inorganic and organic geochemists, microbiologists, paleomagnetists, physical properties specialists, and borehole geophysicists. Good working knowledge of the English language is required.

How to apply

Applications for participation must be submitted to the appropriate IODP Program Member Office. In your application, please specify if you are interested in participating offshore-onshore or onshore-only. Please note that there is no option to participate offshore-only. 

Applications should reach the appropriate Program Member Office no later than Thursday 1 December 2022

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IODP Expedition Call 401: Mediterranean-Atlantic Gateway Exchange

APPLICATION DEADLINE: 1 December 2022

Applications are invited from scientists in IODP-participating countries to join the Science Party for IODP Expedition 401: Mediterranean-Atlantic Gateway Exchange, taking place from 10 December 2023 – 9 February 2024 onboard JOIDES ResolutionView the Expedition 401 webpage

Background

Marine gateways play a critical role in the exchange of water, heat, salt and nutrients between oceans and seas. The advection of dense waters helps drive global thermohaline circulation and, since the ocean is the largest of the rapidly exchanging CO2 reservoirs, this advection also affects atmospheric carbon concentration. Changes in gateway geometry can therefore significantly alter both the pattern of global ocean circulation and associated heat transport and climate, as well as having a profound local impact. 

Today, the volume of dense water supplied by Atlantic-Mediterranean exchange through the Gibraltar Strait is amongst the largest in the global ocean. For the past five million years this overflow has generated a saline plume at intermediate depths in the Atlantic that deposits distinctive contouritic sediments in the Gulf of Cadiz and contributes to the formation of North Atlantic Deep Water. 

This single gateway configuration only developed in the early Pliocene. During the Miocene, a wide, open seaway linking the Mediterranean and Atlantic evolved into two narrow corridors: one in northern Morocco; the other in southern Spain. Formation of these corridors permitted Mediterranean salinity to rise and a new, distinct, dense water mass to form and overspill into the Atlantic for the first time. Further restriction and closure of these connections resulted in extreme salinity fluctuations in the Mediterranean, leading to the formation of the Messinian Salinity Crisis salt giant.

IODP Expedition 401 is one part of an amphibious drilling proposal that also includes coring on land as part of the International Continental Drilling Program (ICDP). The Investigating Miocene Mediterranean-Atlantic Gateway Exchange (IMMAGE) drilling proposal is designed to recover a complete record of Atlantic-Mediterranean exchange from its Late Miocene inception to its current configuration. This will be achieved by coring Miocene offshore sediments and borehole logging at three sites on either side of the Gibraltar Strait during IODP Expedition 401 and from the two precursor connections now exposed on land in southern Spain and northern Morocco with ICDP. 

Drilling will sample up to a subbottom depth of 1277m, recovering Miocene sediments expected to date between 5.33 and 7.2 million years old.

Scientific objectives

IMMAGE has three primary scientific objectives which will be met through drilling the three IODP holes during Expedition 401 and the two ICDP holes:

  1. To document the time at which the Atlantic first started to receive a distinct overflow from the Mediterranean and to evaluate quantitatively its role in Late Miocene global climate and regional environmental change.
  2. To recover a complete record of Atlantic-Mediterranean exchange before, during and after the Messinian Salinity Crisis and to evaluate the causes and consequences of this extreme oceanographic event, locally, regionally and globally.
  3. To test our quantitative understanding of the behaviour of ocean plumes during the most extreme exchange in Earth’s history.

How to apply

Applications for participation must be submitted to the appropriate IODP Program Member Office. In your application, please specify if you are interested in participating offshore-onshore or onshore-only. Please note that there is no option to participate offshore-only. 

Applications should reach the appropriate Program Member Office no later than Thursday 1 December 2022

ANZIC survey: supporting scientific ocean drilling proposals

Got a scientific ocean drilling proposal in mind? The ANZIC Science Committee and the ANZIC Office are committed to supporting our community in preparing and submitting new or resurrected proposals – but we need your input! 

Please take a moment to complete our short survey so we can learn more about what you’re seeking to do, how it aligns with the 2050 Science Framework, and whether you’d like us to host an informal webinar outlining the proposal process. We’d also love to hear about drilling ideas that are not yet developed so we can try connect you with collaborators or projects, or provide a workshop to develop the idea further. 

This survey is open to anyone in Australia or New Zealand who is considering a drilling project in any ocean, or international collaborators considering drilling projects in ANZIC waters. We also welcome ICDP proposal ideas. 

Call for Feedback: Science Mission Requirements for a New Riserless U.S. Drilling Vessel

Deadline: 16 September 2022

Members of the ANZIC community are invited to provide feedback on the draft report on Science Mission Requirements for a globally ranging riserless U.S. drilling vessel to address high priority scientific objectives outlined in the 2050 Science Framework: Exploring Earth by Scientific Ocean Drilling. This report has been prepared by a steering committee of the U.S. Science Support Program (USSSP) at the request of the National Science Foundation, and is the culmination of an extensive process that included the U.S. community survey, a series of online workshops, and an in-person workshop held in Chicago in May 2022.

Science Mission Requirements for a New Riserless U.S. Drilling Vessel

The draft report has now been posted for community feedback from U.S and non-U.S. members of the IODP community, with a submission deadline of 16 September 2022. This is an opportunity for the global ocean research community to provide input on a critical facility necessary to carry out the aims of the 2050 Science Framework.

View the full report here.

Expedition Call 389: Hawaiian Drowned Reefs – closing soon!

An IODP Mission Specific Platform Expedition organised by the ECORD Science Operator (ESO) 

APPLICATION DEADLINE: 23 September 2022

Logo for IODP Expedition 389 Hawaiian Drowned Reefs

Applications are invited from scientists in countries participating in IODP to join the Science Party for IODP Expedition 389: Hawaiian Drowned Reefs. Any scientist from an IODP member country with expertise relevant to the objectives of the proposal may apply. 

Please note that this call supersedes the previous Calls for Scientists in October 2018. We are not carrying over previous applications, and we welcome fresh applications from both new and previous applicants. 

The Co-chief Scientists for this Expedition are Prof. Jody Webster (University of Sydney, Australia) and Prof. Ana Christina Ravelo (University of California, Santa Cruz, USA). 

The proposal upon which this expedition is based was submitted as IODP Proposal #716 ‘Hawaiian Drowned Reefs’. The proposal describing the primary drill sites, as well as up-to-date expedition information, can be found on the Expedition 389 webpage. You may also find it useful to consult a science article on the expedition by the Co-chief Scientists and others in ECORD Newsletter #35 (Dec 2021) (pages 20-23).

Map for IODP Expedition 389 Hawaiian Drowned Reefs

 

Information webinar: 9 September

A special information webinar was held on 9 September for interested parties to learn more about the scientific objectives of this expedition, life at sea, and how to apply to participate. 

 

Background and objectives 

The overall goal of the drilling campaign is to sample a unique succession of drowned coral reefs around Hawaii now at -134 to -1155 m below sea level. As a direct result of Hawaii’s rapid (2.5-2.6/kyr) but nearly constant subsidence, a thick (100-200 m) expanded sequence of shallow coral reef dominated facies is preserved within the reefs. These reefs span important periods in Earth climate history, either not available or highly condensed on stable (Great Barrier Reef, Tahiti) and uplifted margins (Papua New Guinea, Barbados) due to a lack of accommodation space and/or unfavourable shelf morphology. Specifically, these data show that the reefs grew (for ~90-100 kyrs, albeit episodically) into, during and out of the majority of the last five to six glacial cycles. 

Therefore, scientific drilling through these reefs will generate a new record of sea-level and associated climate variability during several controversial and poorly understood periods over the last 500 kyr. 

The project has four major objectives: 

1) To define the nature of sea level-change in the central Pacific over the last 500 kyr, we will construct a new, more complete sea level curve from the drowned Hawaiian reefs that will allow: a) more detailed testing of Milankovitch climate theory predictions and; b) improved constraints on millennial-scale sea-level changes over the last 500 kyr. 

2) To identify critical processes that determine paleoclimate variability of the central Pacific over the last 500 kyr, we will: (a) reconstruct the mean and seasonal/interannual climate variability from massive coral samples; and (b) use these records to investigate how high latitude climate (e.g., ice sheet volume), pCO2, and seasonal solar radiation impact subtropical Pacific climate. This approach can be used to test theoretical predictions of climate response and sensitivity to changes in boundary conditions and climate forcing. 

3) To establish the geologic and biologic response of coral reef systems to abrupt sea-level and climate changes, we will: (a) establish the detailed stratigraphic and geomorphic evolution of the reefs in response to these changes; (b) test ecologic theories about coral reef resilience and vulnerability to extreme, repeated environmental stress over interglacial/glacial to millennial time scales; and (c) establish the nature of living and ancient microbial communities in the reefs and their role in reef building. 

4) To elucidate the subsidence and volcanic history of Hawaii, we will: (a) refine the variation through space and time of the subsidence of Hawaii, and; (b) improve the understanding of the volcanic evolution of the island. 

Timing 

Until the platform and drilling services are confirmed (estimated late summer 2022) all timings are provisional. It is envisaged that the offshore phase of the expedition will last a maximum of 60 days within a window from mid-August to end October 2023, with only a subset of the Science Party participating. Offshore activities will focus on core recovery, curation, sampling for ephemeral properties, microbiology, ancient DNA (aDNA), biostratigraphy, physical properties, preliminary lithostratigraphy (whole core observed at core ends and through plastic liners), and downhole logging. The cores will not be split at sea. 

Subsequently, an Onshore Science Party (OSP) will be held at the MARUM – Center for Marine Environmental Sciences, University of Bremen, Germany, in early 2024 (exact dates to be confirmed), where the cores will be split. The OSP will be a maximum of 4 weeks long, the exact length dependent on core recovery. All members of the Science Party must attend the Onshore Science Party. Please see http://www.ecord.org/expeditions/msp/ (and linked pages within) for an overview of Mission Specific Platforms in IODP. 

Successful applicants will be invited either as an offshore-onshore participant, or as an onshore-only participant. Please note that there are no opportunities for offshore-only participation. 

Expertise sought 

Opportunities exist for researchers (including graduate students) in all specialties. While other expertise may be considered, specialists in the following fields are required: carbonate sedimentology, corals, sedimentology, paleontology, palynology, organic geochemistry, inorganic geochemistry, structural geology, paleomagnetics, microbiology, ancient DNA (aDNA), physical properties, geophysics, geodynamics, glacial isostatic adjustment, stratigraphic correlation and downhole logging. For the offshore phase of the expedition, we are particularly looking for the following fields: carbonate sedimentology, corals, sedimentology, paleontology, organic geochemistry, inorganic geochemistry, microbiology, ancient DNA (aDNA), physical properties, and petrophysics/downhole logging. 

Where to apply

Applications for participation must be submitted to the appropriate IODP Program Member Office. In your application, please specify if you are interested in participating offshore-onshore or onshore-only. Please note that there is no option to participate offshore-only. 

Applications should reach the appropriate Program Member Office no later than Friday 23 September 2022; candidates shortlisted by the Program Member Offices will be considered by ESO and the Co-chief Scientists in autumn 2022. 

For further details from ESO, please contact: David McInroy, ESO Science Manager, dbm@bgs.ac.uk