Which open datasets carry measured diatom and microfossil assemblage records used as paleoenvironmental proxies?
Meridian Evidence Report - grounded, graded, read-only. Datasets are byte-measured (the moat); works ride alongside as declared.
- Datasets
- 8
- Measured
- 8 · 100%
- Papers
- 15
- Patents
- 0
- Claims
- 5
- Sources
- 1
Synthesized answer
Several open tabular datasets on Pangaea contain measured record and column counts representing diatom and microfossil assemblages. These datasets provide valuable proxies for paleoceanographic and paleoclimate reconstructions, although several historical deep-sea drilling publications lack corresponding measured dataset structures in the provided evidence.
- measured
Tabular datasets containing measured record counts and column profiles for diatoms include ds_01KWZ5P29TM4JPECJDPEJJ49H3 (11 records, 250 columns), ds_01KWZ5NYNDNMQY4T8Q0VXK9VEQ (60 records, 199 columns), ds_01KWZ5NYMFY2XWWH5GEGKXQTFM (76 records, 176 columns), and ds_01KWZ5NX9XXYA8N8V21EHS04WF (72 records, 132 columns).
- declared
Based strictly on declared evidence, these datasets represent diatom species abundance estimates from vertical multinet hauls in the Indian Ocean, surface sediments of the Southwestern Atlantic, the Peru-Chile Current, and Lake Lama sediments.
- measured
Other tabular datasets containing measured record counts and column profiles for microfossils include ds_01KWZ5P3ZFZ0RKZTGYTBN4MPMX (69 records, 245 columns), ds_01KWZ5NZ7VKF3FRBPBTMSHA7GE (36 records, 57 columns), and ds_01KWZ5NYQH6948VZ7F8610ZNFF (16 records, 64 columns).
- declared
Based strictly on declared evidence, these microfossil datasets represent radiolarian abundances in sediment core Y8 and Palmer Deep, as well as dinoflagellate cyst counts in core ABC26, linked in literature to late Pleistocene-Holocene temperatures and palaeoproductivity reconstructions.
- declared
The provided evidence cannot establish measured dataset structures for several historical oceanographic and biostratigraphic publications (such as Deep Sea Drilling Project Legs 18, 20, 28, and 38), which are only present as literature declarations.
Authored by the synthesizer, grounded in this exploration's evidence - every claim cites only what the graph holds and is graded by what it rests on (measured only when it rests on bytes, never on literature). vertex:gemini-3.5-flash:medium
- measured8· 35%
- declared15· 65%
Measured = we read the bytes; declared= the source's own metadata. The moat is how much of the base is measured, not taken on the publisher's word.
- pangaea8
- tabular8
- Datasets8· 35%
- Scholarly works15· 65%
Measured datasets · the moat
| Dataset | Grade | Topology | Rows × Cols | Size | Null % |
|---|---|---|---|---|---|
| Distribution of diatom species as abundance estimates from vertical multinet hauls from 150 m water depth in the Indian Ocean· pangaea | measured | tabular | 11 × 250 | 33 KB | 51% |
| Radiolarian abundance of sediment core Y8· pangaea | measured | tabular | 69 × 245 | 75 KB | 0% |
| Biogenic opal and diatoms in surface sediments of the South Western Atlantic· pangaea | measured | tabular | 60 × 199 | 132 KB | 0.0% |
| Surface data of the Peru-Chile Current, relative abundance of diatoms· pangaea | measured | tabular | 76 × 176 | 133 KB | 0% |
| Relative abundance of diatoms in surface sediments of Lake Lama· pangaea | measured | tabular | 72 × 132 | 97 KB | 0.7% |
| Dinoflagellate cyst counts on sediment core ABC26· pangaea | measured | tabular | 16 × 64 | 19 KB | 2.8% |
| (Table T1) Abundance of radiolarian skeletons in scrape samples of ODP Hole 178-1098B· pangaea | measured | tabular | 36 × 57 | 17 KB | 1.5% |
| Flux data of NU2_trap (Table A1)· pangaea | measured | tabular | 20 × 57 | 26 KB | 0% |
Rows graded measuredare byte-measured from the data itself, not the uploader's claim; declaredrows carry the source's own metadata (not yet probed).
Claims vs measured
| Synthesized claim | Grade | Rests on (measured · literature) |
|---|---|---|
Tabular datasets containing measured record counts and column profiles for diatoms include ds_01KWZ5P29TM4JPECJDPEJJ49H3 (11 records, 250 columns), ds_01KWZ5NYNDNMQY4T8Q0VXK9VEQ (60 records, 199 columns), ds_01KWZ5NYMFY2XWWH5GEGKXQTFM (76 records, 176 columns), and ds_01KWZ5NX9XXYA8N8V21EHS04WF (72 records, 132 columns). | measured | 12 · 0 |
Based strictly on declared evidence, these datasets represent diatom species abundance estimates from vertical multinet hauls in the Indian Ocean, surface sediments of the Southwestern Atlantic, the Peru-Chile Current, and Lake Lama sediments. | declared | - |
Other tabular datasets containing measured record counts and column profiles for microfossils include ds_01KWZ5P3ZFZ0RKZTGYTBN4MPMX (69 records, 245 columns), ds_01KWZ5NZ7VKF3FRBPBTMSHA7GE (36 records, 57 columns), and ds_01KWZ5NYQH6948VZ7F8610ZNFF (16 records, 64 columns). | measured | 9 · 0 |
Based strictly on declared evidence, these microfossil datasets represent radiolarian abundances in sediment core Y8 and Palmer Deep, as well as dinoflagellate cyst counts in core ABC26, linked in literature to late Pleistocene-Holocene temperatures and palaeoproductivity reconstructions. | declared | 0 · 3 |
The provided evidence cannot establish measured dataset structures for several historical oceanographic and biostratigraphic publications (such as Deep Sea Drilling Project Legs 18, 20, 28, and 38), which are only present as literature declarations. | declared | 0 · 8 |
Measured = byte-level facts from the datasets; literature = cited papers / patents (a dataset's own name counts toward neither). A claim is only measuredwhen it rests on bytes and no literature - the distinction a papers-only synthesis can't make.
- Which datasets record measured diatom or microfossil abundance matrices?
- What per-species columns and completeness do the measured profiles carry?
Evidence landscape
Built on 8 measured datasets and 15 declared documents.
Only datasets can be measured - Meridian read their bytes. Papers and patents ride alongside as declared, never blurred with a dataset's measurements.
Provenance map
How to read this map
Evidence grade · the link
- measured- we read the bytes - the measured moat
- declared- the source's claim, not verified against the bytes
- extracted- read from prose by a model, the weakest
Kind · the shape
- dataset
- paper
- patent
- claim
- topic / question / plan
Scholarly works · 15 · declared
- Pliocene-Pleistocene Sediments of the Equatorial Pacific: Their Paleomagnetic, Biostratigraphic, and Climatic Record
declaredGeological Society of America Bulletin1969
- Microfossil indicators of ocean water masses, circulation and climate
declaredGeological Society London Special Publications1995
- Radiolaria from DSDP Leg 20
declaredU.S. Government Printing Office eBooks1973
- Radiolaria from the Eastern North Pacific, Deep Sea Drilling Project, Leg 18
declaredU.S. Government Printing Office eBooks1973
- Radiolaria from the Norwegian Sea, Leg 38 of the Deep Sea Drilling Project
declaredU.S. Government Printing Office eBooks1976
- Diatom Stratigraphy of the Southern Ocean
declaredU.S. Government Printing Office eBooks1975
- Cenozoic Diatoms from the Northeast Pacific, Leg 18
declaredU.S. Government Printing Office eBooks1973
- Cenozoic Planktonic Marine Diatom Diversity and Correlation to Climate Change
declaredPLoS ONE2014
- Radiolarian-based sea surface temperatures and paleoceanographic changes during the Late Pleistocene-Holocene in the subantarctic southwest Pacific
declaredMarine Micropaleontology2009
- Oceanographic control of biogenic opal and diatoms in surface sediments of the Southwestern Atlantic
declaredMarine Geology2002
- Biogenic silica and diatom thanatocoenosis in surface sediments below the Peru-Chile Current: controlling mechanisms and relationship with productivity of surface waters
declaredMarine Micropaleontology2003
- Combining ordination techniques and geostatistics to determine the patterns of diatom distributions at Lake Lama, Central Siberia
declaredJournal of Paleolimnology2002
- Palaeoproductivity and post-depositional aerobic organic matter decay reflected by dinoflagellate cyst assemblages of the Eastern Mediterranean S1 sapropel
declaredMarine Geology2001
- Data Report: Radiolarians in Sediments from the Palmer Deep, Antarctica, Leg 178, Site 1098
declaredProceedings of the Ocean Drilling Program2002
- Seasonal productivity dynamics in the pelagic central Benguela System inferred from the flux of carbonate and silicate organisms
declaredJournal of Marine Systems2002
Findings
Open microfossil datasets expose measured tabular assemblage matrices - per-species abundance columns with byte-verified structure and null rates - reusable for paleo-productivity and environmental reconstruction.
Method & coverage
- Questions. Which datasets record measured diatom or microfossil abundance matrices? · What per-species columns and completeness do the measured profiles carry?
- Grading.Measured = probed off the bytes; declared = the source's own metadata.
- Sources.Meridian's measured dataset corpus, plus the scholarly literature (works) and USPTO (patents).
- As of. 2026-10-02.
References
- 1. Distribution of diatom species as abundance estimates from vertical multinet hauls from 150 m water depth in the Indian Ocean · 11 rows
- 2. Radiolarian abundance of sediment core Y8 · 69 rows
- 3. Biogenic opal and diatoms in surface sediments of the South Western Atlantic · 60 rows
- 4. Surface data of the Peru-Chile Current, relative abundance of diatoms · 76 rows
- 5. Relative abundance of diatoms in surface sediments of Lake Lama · 72 rows
- 6. Dinoflagellate cyst counts on sediment core ABC26 · 16 rows
- 7. (Table T1) Abundance of radiolarian skeletons in scrape samples of ODP Hole 178-1098B · 36 rows
- 8. Flux data of NU2_trap (Table A1) · 20 rows
- · Pliocene-Pleistocene Sediments of the Equatorial Pacific: Their Paleomagnetic, Biostratigraphic, and Climatic Record - 10.1130/0016-7606(1969)80[1481:psotep]2.0.co;2
- · Microfossil indicators of ocean water masses, circulation and climate - 10.1144/gsl.sp.1995.083.01.12
- · Radiolaria from DSDP Leg 20 - 10.2973/dsdp.proc.20.113.1973
- · Radiolaria from the Eastern North Pacific, Deep Sea Drilling Project, Leg 18 - 10.2973/dsdp.proc.18.116.1973
- · Radiolaria from the Norwegian Sea, Leg 38 of the Deep Sea Drilling Project - 10.2973/dsdp.proc.38.131.1976
- · Diatom Stratigraphy of the Southern Ocean - 10.2973/dsdp.proc.28.112.1975
- · Cenozoic Diatoms from the Northeast Pacific, Leg 18 - 10.2973/dsdp.proc.18.117.1973
- · Cenozoic Planktonic Marine Diatom Diversity and Correlation to Climate Change - 10.1371/journal.pone.0084857
- · Radiolarian-based sea surface temperatures and paleoceanographic changes during the Late Pleistocene-Holocene in the subantarctic southwest Pacific - 10.1016/j.marmicro.2008.12.002
- · Oceanographic control of biogenic opal and diatoms in surface sediments of the Southwestern Atlantic - 10.1016/s0025-3227(02)00210-4
- · Biogenic silica and diatom thanatocoenosis in surface sediments below the Peru-Chile Current: controlling mechanisms and relationship with productivity of surface waters - 10.1016/s0377-8398(02)00161-5
- · Combining ordination techniques and geostatistics to determine the patterns of diatom distributions at Lake Lama, Central Siberia - 10.1023/a:1021695305610
- · Palaeoproductivity and post-depositional aerobic organic matter decay reflected by dinoflagellate cyst assemblages of the Eastern Mediterranean S1 sapropel - 10.1016/s0025-3227(00)00134-1
- · Data Report: Radiolarians in Sediments from the Palmer Deep, Antarctica, Leg 178, Site 1098 - 10.2973/odp.proc.sr.178.221.2002
- · Seasonal productivity dynamics in the pelagic central Benguela System inferred from the flux of carbonate and silicate organisms - 10.1016/s0924-7963(02)00189-6