{"help": "https://data.gov.au/data/api/3/action/help_show?name=package_show", "success": true, "result": {"archived": false, "author_email": null, "contact_point": "clientservices@ga.gov.au", "creator_user_id": "c2fbbe4a-4ba0-4945-808b-67454605a4cf", "duplicate_score": 1, "geospatial_topic": [], "id": "0414b6d4-08b1-4ea4-bf65-4775b44f46d5", "isopen": false, "language": "eng", "license_id": "notspecified", "license_title": "notspecified", "maintainer": null, "maintainer_email": null, "metadata_created": "2026-04-04T07:53:37.751778", "metadata_modified": "2026-04-04T07:53:37.751788", "name": "strontium-carbon-and-oxygen-isotope-data-from-ndi-carrara-115", "notes": "NDI Carrara 1 is a 1751 m stratigraphic drill hole completed in 2020 as part of the MinEx CRC National Drilling Initiative (NDI). This campaign was a collaboration between Geoscience Australia under the Exploring for the Future program, together with MinEx CRC and the Northern Territory Geological Survey. It is the first drillhole to intersect Proterozoic rocks of the Carrara Sub-basin, a recently discovered depocentre in the South Nicholson region. The drill hole intersected ~625 m of the Paleozoic Georgina Basin, which overlies ~1120 m of Proterozoic carbonates, black shales and siliciclastic rocks, with hydrocarbon shows encountered in both the Paleozoic and Proterozoic sections. Following the completion of the drillhole, a comprehensive analytical program was carried out by Geoscience Australia to better understand the geology of the Carrara Sub-basin and its resource potential.\n\n\n\nHere we present new high-resolution strontium (87Sr/86Sr), carbon (\u03b413C) and oxygen (\u03b418O) isotope data from carbonate bearing samples of the Paleozoic Georgina Basin and the Proterozoic Lawn Hill Formation intersected in NDI Carrara 1. The aim of this data acquisition was to provide an improved understanding of the paleo-depositional environments and local/global chemostratigraphy trends recorded in the Carrara Sub-basin. \n\n\n\nThe majority of samples show significant alteration and thus caution should be exercised when using this data for assessing primary depositional conditions and contemporary sea-water chemistry. Despite the altered nature of most samples, samples belonging to undifferentiated Georgina Basin preserve 87Sr/86Sr ratios close to that of mid-Cambrian seawater, indicating the sampled intervals of Georgina Basin were likely connected to the global Cambrian ocean. Two small positive \u03b413C excursions (with positive shift in \u03b418O) within Georgina Basin samples may coincide with reported mid-Cambrian positive \u03b413C global marine excursions. \n\n\n\nThe least altered samples from the Proterozoic Lawn Hill Formation show more radiogenic 87Sr/86Sr values than the expected value of coeval mid-Proterozoic ocean at ~1600 Ma. These radiogenic 87Sr/86Sr values may reflect (i) influx of terrigenous material into a restricted basin with reduced interaction with the global ocean, or (ii) secondary overprinting by more radiogenic diagenetic fluids.\n\n\nAbstract/Poster submitted and presented at 2023 Australian Earth Science Convention (AESC), Perth WA (https://2023.aegc.com.au/)", "num_resources": 2, "num_tags": 9, "organization": {"id": "0143757a-86ab-43e4-bba6-4a3a2a02b6c4", "name": "australian-ocean-data-network", "title": "Australian Ocean Data Network", "type": "organization", "description": "Harvester for Australian Ocean Data Network", "image_url": "", "created": "2025-06-23T12:29:10.320926", "is_organization": true, "approval_status": "approved", "state": "active"}, "original_harvest_source": {"site_url": "https://catalogue.aodn.org.au", "href": "https://catalogue.aodn.org.au/geonetwork/srv/eng/csw/dataset/strontium-carbon-and-oxygen-isotope-data-from-ndi-carrara-115", "title": "Australian Oceans Data Network"}, "owner_org": "0143757a-86ab-43e4-bba6-4a3a2a02b6c4", "private": false, "promotion_level": "0", "spatial": "{\"type\": \"Point\", \"coordinates\": [137.785, -18.97325]}", "spatial_coverage": "{\"type\": \"Point\", \"coordinates\": [137.785, -18.97325]}", "state": "active", "temporal_coverage_from": "2023-08-02 05:32:18", "title": "Strontium, carbon and oxygen isotope data from NDI Carrara 1", "type": "dataset", "unpublished": false, "url": null, "version": null, "resources": [{"cache_last_updated": null, "cache_url": null, "created": "2026-04-04T07:53:37.753110", "datastore_active": false, "datastore_contains_all_records_of_source_file": false, "description": "Link to Conference Page", "format": "HTML", "hash": "", "id": "9b181a0c-c02a-4f20-9411-64c32fa186e0", "last_modified": null, "metadata_modified": "2026-04-04T07:53:37.743269", "mimetype": null, "mimetype_inner": null, "name": "Link to Conference Page", "package_id": "0414b6d4-08b1-4ea4-bf65-4775b44f46d5", "position": 0, "resource_locator_function": "", "resource_locator_protocol": "WWW:LINK-1.0-http--link", "resource_type": null, "size": null, "state": "active", "url": "https://aesc2023.com.au/", "url_type": null, "zip_extract": false}, {"cache_last_updated": null, "cache_url": null, "created": "2026-04-04T07:53:37.753117", "datastore_active": false, "datastore_contains_all_records_of_source_file": false, "description": "Download Poster (pdf) [876.1KB]", "format": "PDF", "hash": "", "id": "890bc12e-97a3-4226-9e10-911c91617370", "last_modified": null, "metadata_modified": "2026-04-04T07:53:37.743379", "mimetype": null, "mimetype_inner": null, "name": "Download Poster (pdf) [876.1KB]", "package_id": "0414b6d4-08b1-4ea4-bf65-4775b44f46d5", "position": 1, "resource_locator_function": "", "resource_locator_protocol": "WWW:LINK-1.0-http--link", "resource_type": null, "size": null, "state": "active", "url": "https://d28rz98at9flks.cloudfront.net/148000/148000_00_0.PDF", "url_type": null, "zip_extract": false}], "tags": [{"display_name": "EFTF \u2013 Exploring for the Future", "id": "909d5c1c-3ed4-40c5-abcd-3fe164de1b08", "name": "EFTF \u2013 Exploring for the Future", "state": "active", "vocabulary_id": null}, {"display_name": "MinEx CRC \u2013 Mineral Exploration Cooperative Research Centre", "id": "09534217-336d-44f0-a4ef-19eb491dcb78", "name": "MinEx CRC \u2013 Mineral Exploration Cooperative Research Centre", "state": "active", "vocabulary_id": null}, {"display_name": "NDI Carrara 1", "id": "57df3d8d-92bf-4ac0-b843-b6069af9ef59", "name": "NDI Carrara 1", "state": "active", "vocabulary_id": null}, {"display_name": "Stratigraphy", "id": "760f03cb-a1bd-4e62-8d5b-6356e944b496", "name": "Stratigraphy", "state": "active", "vocabulary_id": null}, {"display_name": "Stratigraphy (incl. biostratigraphy", "id": "f36b9c0c-f9b7-45b1-8414-a751a3d6e53f", "name": "Stratigraphy (incl. biostratigraphy", "state": "active", "vocabulary_id": null}, {"display_name": "carbon isotopes", "id": "65fb6ee8-9600-4241-a64c-2f0c3d757734", "name": "carbon isotopes", "state": "active", "vocabulary_id": null}, {"display_name": "oxygen isotopes", "id": "db472989-835e-437a-9389-071d25971e06", "name": "oxygen isotopes", "state": "active", "vocabulary_id": null}, {"display_name": "sequence stratigraphy and basin analysis)", "id": "1db941da-5f4c-4535-bed5-75171b31685a", "name": "sequence stratigraphy and basin analysis)", "state": "active", "vocabulary_id": null}, {"display_name": "strontium isotopes", "id": "660fb12f-fd9c-4690-8515-a790e189ad94", "name": "strontium isotopes", "state": "active", "vocabulary_id": null}], "groups": [], "relationships_as_subject": [], "relationships_as_object": [], "extras": [{"key": "harvest_object_id", "value": "8e9de6b5-9530-4731-ad08-21306a3d8840"}, {"key": "harvest_source_id", "value": "a2216e59-91ec-48b1-83cc-d35d9f09fcec"}, {"key": "harvest_source_title", "value": "Australian Oceans Data Network"}]}}