{
 "schema": "ausmt-survey-metadata",
 "version": "0.1",
 "survey_id": "century-north-2020-21",
 "title": "Century North MT 2020-21",
 "dates": {
  "coverage": {
   "year_start": 2020,
   "year_end": 2021
  },
  "issued": "2021-12-15"
 },
 "identifiers": [
  {
   "scheme": "URL",
   "identifier": "https://geoscience.data.qld.gov.au/data/magnetotelluric/mt100144"
  }
 ],
 "abstract": "Magnetotelluric survey over the Termite Range Fault about 15 km north-west of the Century zinc mine in north-west Queensland, acquired for Red Metal Limited by Moombarriga Geoscience under the Queensland Collaborative Exploration Initiative and released by the Geological Survey of Queensland as record mt100144. AusMT serves all 137 soundings, one per position, recorded overnight at a nominal 500 m spacing on seven profiles across two field seasons, 16 October to 18 November 2020 and 26 April to 25 May 2021. Every file carries the impedance tensor with variances, apparent resistivity, phase and the tipper on a common 10 kHz axis; the measured band runs from 0.0001 s to a median longest usable period of 2016 s. Phoenix MTU-5C receivers with MTC-150 coils and 80 m dipoles were processed in EMPower with a remote reference. The frame served is the frame delivered, which the contractor's report states is magnetic north.",
 "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"
  }
 ],
 "creators": [
  {
   "name": "Moombarriga Geoscience Pty Ltd",
   "name_type": "organisation"
  },
  {
   "name": "Red Metal Limited",
   "name_type": "organisation"
  }
 ],
 "contributors": [
  {
   "name": "Moombarriga Geoscience Pty Ltd",
   "name_type": "organisation",
   "role": "DataCollector"
  },
  {
   "name": "Red Metal Limited",
   "name_type": "organisation",
   "role": "Sponsor"
  }
 ],
 "organisations": [
  {
   "name": "Geological Survey of Queensland",
   "roles": [
    "custodian",
    "publisher",
    "distributor"
   ],
   "primary_custodian": true
  }
 ],
 "funders": [
  {
   "name": "Geological Survey of Queensland",
   "award_number": "CEI0121",
   "award_title": "Collaborative Exploration Initiative, Round 4"
  },
  {
   "name": "OZ Minerals Limited",
   "award_title": "Greenfields Discovery Alliance"
  }
 ],
 "citation": {
  "preferred_identifier": {
   "scheme": "URL",
   "identifier": "https://geoscience.data.qld.gov.au/data/magnetotelluric/mt100144"
  },
  "text_source": "ausmt_generated"
 },
 "acknowledgements": [
  {
   "text": "Magnetotelluric Survey acquired for Red Metal as part of the Collaborative Exploration Initiative program (CEI0121). Released by the Geological Survey of Queensland, record mt100144, under a Creative Commons Attribution licence.",
   "type": "required_source",
   "source": "the record's own notes and licence fields, read from the GSQ portal API when this package was built"
  }
 ],
 "rights": {
  "license": "CC-BY",
  "access": "open"
 },
 "relationships": [
  {
   "identifier": "https://geoscience.data.qld.gov.au/data/report/cr128357",
   "identifier_type": "URL",
   "relation": "IsVariantFormOf"
  }
 ],
 "attribution": {
  "custodian": "Geological Survey of Queensland",
  "statement": "Sourced from the Geological Survey of Queensland Open Data Portal, record mt100144, Century North, licensed Creative Commons Attribution. The survey was acquired by Moombarriga Geoscience Pty Ltd for Red Metal Limited under the Collaborative Exploration Initiative, CEI0121. The header dates of 135 served copies have been repaired; those delivered files are kept unaltered under provenance/as-delivered/ and every change is recorded in the served file itself.",
  "changes_made": true,
  "changes_summary": "135 of the 137 served files carry a header date repair made with _tools/repair_edi_header_dates.py: ACQDATE, which prints the Geotools placeholder 01/01/01, is set to the date of that station's own >INFO recording identifier, and FILEDATE, which prints 06/14/21, is rewritten to 2021-06-14. Nine lines recording the source file, its digest, the defect, the change, the basis, the ruling and the tool are inserted after >INFO. Each repaired file therefore differs from its delivered copy in exactly two header lines and nine inserted lines, and grows by four bytes in the header; no data block, no line ending and no other header line is changed. The remaining 2 files, CEN3100 and CEN4015, carry a real ACQDATE that the reader takes correctly and are served byte identical to the delivery."
 },
 "provenance": {
  "generated": "2026-09-20T05:05:11Z",
  "generator": "ausmt/extract.build_portal 0.2.1"
 }
}