{
 "schema": "ausmt-survey-metadata",
 "version": "0.1",
 "survey_id": "tabletop-south-2023",
 "title": "Tabletop South MT 2023",
 "dates": {
  "coverage": {
   "year_start": 2023,
   "year_end": 2023
  },
  "issued": "2025-08-20"
 },
 "abstract": "Seventy eight broadband magnetotelluric soundings at Greatland Gold's Tabletop project in the Paterson region of Western Australia, recorded by Moombarriga Geoscience between 11 September and 4 October 2023. Sixty six form a grid about 6.2 km across over the Tabletop East target, neighbours about 0.3 km to 0.8 km apart; twelve lie on one line about 3.5 km long over Tabletop West, which the contractor's report calls Tabletop North. Phoenix MTU-5C and MTU-8A receivers recorded two 80 m dipoles and three induction coils for 11.5 to 50.5 hours, and every sounding was processed in EMpower against a remote reference. Periods run from 0.0001 s to between 728 s and 11,651 s, with impedance and tipper at every station. The files declare no rotation; the report says declination was corrected in processing, while every file prints a declination of zero. Nothing is rotated and no static shift is applied.",
 "subjects": [
  {
   "code": "370602",
   "scheme": "ANZSRC-FoR-2020",
   "label": "Electrical and electromagnetic methods in geophysics",
   "uri": "https://linked.data.gov.au/def/anzsrc-for/2020/370602"
  }
 ],
 "contributors": [
  {
   "name": "Moombarriga Geoscience",
   "name_type": "organisation",
   "role": "DataCollector"
  },
  {
   "name": "Greatland Gold Pty Ltd",
   "name_type": "organisation",
   "role": "RightsHolder"
  },
  {
   "name": "Greatland Gold Pty Ltd",
   "name_type": "organisation",
   "role": "Sponsor"
  },
  {
   "name": "Geological Survey of Western Australia",
   "name_type": "organisation",
   "role": "Distributor",
   "ror": "https://ror.org/05h2dda38"
  }
 ],
 "organisations": [
  {
   "name": "Geological Survey of Western Australia",
   "ror": "https://ror.org/05h2dda38",
   "roles": [
    "custodian",
    "publisher"
   ],
   "primary_custodian": true
  },
  {
   "name": "Greatland Gold Pty Ltd",
   "roles": [
    "rights_holder"
   ]
  },
  {
   "name": "Moombarriga Geoscience",
   "roles": [
    "data_collector"
   ]
  }
 ],
 "funders": [
  {
   "name": "Greatland Gold Pty Ltd"
  }
 ],
 "rights": {
  "license": "CC-BY-4.0",
  "access": "open"
 },
 "extent": {
  "bbox": {
   "west": 123.8928,
   "south": -22.8888,
   "east": 124.0187,
   "north": -22.7793
  }
 },
 "relationships": [
  {
   "identifier": "https://magix.dmirs.wa.gov.au/api/surveylookup/getsurveybyid?surveyId=4281",
   "identifier_type": "URL",
   "relation": "IsVariantFormOf"
  },
  {
   "identifier": "https://geodownloads.dmp.wa.gov.au/downloads/geophysics/72843.zip",
   "identifier_type": "URL",
   "relation": "IsVariantFormOf"
  },
  {
   "identifier": "https://geodocs.dmirs.wa.gov.au/Web/documentlist/4/Report_Ref/A147727",
   "identifier_type": "URL",
   "relation": "IsDocumentedBy"
  }
 ],
 "attribution": {
  "custodian": "Geological Survey of Western Australia",
  "custodian_ror": "https://ror.org/05h2dda38",
  "statement": "Geological Survey of Western Australia, MAGIX registration 72843, Tabletop South MT, acquired by Moombarriga Geoscience for Greatland Gold Pty Ltd. Licensed CC BY 4.0.",
  "changes_made": true,
  "changes_summary": "67 of the 78 served files carry one header repair: the Geotools placeholder ACQDATE=01/01/01 replaced by the date of the recording start the same file's own >INFO ELECTRICS recording identifier gives, and FILEDATE 01/17/24 rewritten to 2024-01-17, with nine record lines after >INFO. The delivered files are kept byte identical under provenance/as-delivered/. The other 11 are byte identical to the archive. No number is changed.",
  "declared_by": "Ben Kay",
  "declared_date": "2026-09-23"
 },
 "provenance": {
  "generated": "2026-09-28T04:39:22Z",
  "generator": "ausmt/extract.build_portal 0.2.1"
 }
}