Data · dataset · 2025
A dataset on U–Pb dating and stable isotope results of Mesoproterozoic Carbonates in North China Craton
Listed in ScienceDB
Table_raw shows the raw data of LA-ICP-MS U-Pb dating results in this study.
Description
Table_summary presents the summary of U-Pb dating, carbon and oxygen isotope results of dolomites. Eight matrix dolomites produced isochrons characterized by limited scatter in data points (MSWD average 2.5) and relative minor uncertainties (average 4.6%).
Five of these analyzes produced U-Pb dates that are within error of the estimated stratigraphic ages, while the other three yielded significantly younger dates, offset by approximately 200 to 500 Ma. Eight U-Pb analyses of fracture-filling dolomites yielded isochrons with MSWD average 1.3, characterized by low uncertainties (average 2.5%) and slightly younger ages (ca. 1558-1295 Ma, average 1406 Ma). Four fracture-filling dolomites produced relative poor-quality isochrons, with significantly younger U-Pb dates ranging from ~1328 to 1045 Ma and larger associated uncertainties (average 11.8%).
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Eight samples yielded U-Pb dates clustering in the Mesozoic (median ca. 102 Ma), with relatively large uncertainties (average 20.7%). Three fracturing samples exhibit syn-stratigraphic initial 207Pb/206Pb values, one matrix sample yielded elevated 207Pb/206Pb, value while the remainder plot well below the terrestrial lead isotope evolution curve. The majority of dolomites exhibit a relatively narrow δ13C range, between –2.0 and 1.0 ‰ (VPDB), except for a few instances of slightly more negative δ13C values reaching approximately –5.0 ‰.
In contrast, dolomites exhibit a relatively wide δ18O range from –13.3 to –5.26 ‰.
Links
Where it is published
- DOI doi.org/10.57760/sciencedb.27738 ↗
DOI / persistent id · from scidb cn
Catalogue records · 1
- OAI-PMH record scidb.cn/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=10.57760%2… ↗
metadata API · from scidb cn
Topics
- From keywords
- Earth & Environmental Science · Engineering · Humanities · Life Sciences · Social Science
- Inferred from text
- Isotope geochemistry 76%
Provenance · 1 source records, 11 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ScienceDB | 10.57760/sciencedb.27738 | 11 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].anzsrc:field:370303 | enrichment · scidb cn | taxonomy-embedding@1.0.0 | title+keywords+description (76%) |
| concepts[field].local:field:earth-environmental | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:engineering | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:humanities | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:life-sciences | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| concepts[field].local:field:social-science | mapping · scidb cn | connector:scidb_cn@1.0.0 | |
| description | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/description |
| license_text | source · scidb cn | connector:scidb_cn@1.0.0 | |
| publication_date | source · scidb cn | connector:scidb_cn@1.0.0 | |
| title | source · scidb cn | connector:scidb_cn@1.0.0 | /metadata/dc/title |