cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.1594/pangaea.788586
title: (Table 1) Age and sedimentation rates of Pleistocene/Holocene sequences at DSDP Sites 86-580 and 94-611

description: The recovery from the North Atlantic (Site 611) of a continuous Pleistocene sedimentary record with a siliceous microfaunal component made it possible to compare the high-latitude abundance pattern of the radiolarian species Cycladophora davisiana in the Atlantic with that produced from analyses of a high-latitude record (Site 580) from the northwest Pacific. Previous studies had shown that the late Pleistocene (0-0.45 Ma) abundance variations of this species in these high-latitude regions were similar.Cycladophora davisiana maxima in the North Atlantic record reach abundance levels three to four times higher than C. davisiana maxima registered in sediments from the northwest Pacific site. This difference in magnitude of abundance peaks is most likely an effect of the more northerly location of Site 611 (53°N) compared with that of Site 580 (42°N), since high-latitude time-slice studies have shown a direct relationship between increasing latitude and C. davisiana abundance. Discontinuous preservation of radiolarians in sediments from North Atlantic Site 611 allows only tentative correlation of the North Atlantic and northwest Pacific C. davisiana abundance curves. These correlations are confined to those portions of the cores where ages are tightly constrained by magnetic boundaries, and to intervals with comparable sedimentation rates.
description: Supplement to: Morley, Joseph J (1987): Comparison of the Pleistocene records of the radiolarian Cycladophora davisiana at high-latitude sites of the Deep Sea Drilling Project. In: Ruddiman, WF; Kidd, RB; Thomas, E; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 94, 889-894
DOI: 10.15468/dl.cp9tsm
title: Occurrence Download

description: A dataset containing 21 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Heterobagrus bocourti"
 ]
}

 The dataset includes 21 records from 6 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0021771-250711103210423/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.akaxy4
title: Occurrence Download

description: A dataset containing 12 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Celmisia coriacea"
 ]
}

 The dataset includes 12 records from 3 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0021773-250711103210423/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.771265
title: (Table 6.2.1) Redox potential and contents of calcium carbonate and organic carbon in bottom sediments of the Tajura rift, Gulf of Aden
DOI: 10.15468/dl.kd4hmn
title: Occurrence Download

description: A dataset containing 3884 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Digitaria sanguinalis",
 "Country is United States of America",
 "HasCoordinate is true"
 ]
}

 The dataset includes 3884 records from 183 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0021774-250711103210423/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.730137
title: (Fig. 7) Distribution of secondary minerals in basalts of the Costa Rica Rift, DSDP Site 504B
DOI: 10.1594/pangaea.658952
title: Stable oxygen and carbon isotope ratios measured on benthic foraminifera from ODP Site 202-1237

description: Measured were epifaunal foraminifera &gt;250 µm, e.g. Planulina wuellerstorfi or Cibicidoides mundulus
DOI: 10.1594/pangaea.771341
title: (Table 6.3.3) Sulfate reduction rate in bottom sediments of the Mozambique Channel, Indian Ocean
DOI: 10.1594/pangaea.771346
title: (Table 6.4.2) Abundance of gas formating and methane oxidizing microorganisms in bottom sediments from the Arabian Sea, Persian Gulf, and Gulf of Oman
DOI: 10.15468/dl.3nmh5p
title: Occurrence Download

description: A dataset containing 2251 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Montrichardia arborescens"
 ]
}

 The dataset includes 2251 records from 174 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0021775-250711103210423/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.830249
title: Stable isotopes measured on on water bottle samples at station SO201-2-67, Bering Sea
DOI: 10.1594/pangaea.770047
title: (Table 3.1.11) Methane amount per 1 sq. m in 0-55 cm layer of bottom sediments from different parts of the White Sea
DOI: 10.15468/dl.pm3mh8
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Poecilia reticulata",
 "Country is Micronesia (Federated States of)",
 "HasCoordinate is true"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0021776-250711103210423/datasets/export for details.
DOI: 10.1594/pangaea.725331
title: (Table 2) Major component contents in ocean ferromanganese crusts

description: Numbers (_1, _2 etc.) added to sample labels denote individual layers. 1 denotes an outer layer.
DOI: 10.15468/dl.53xpuc
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 "BasisOfRecord is one of (Human Observation, Machine Observation, Occurrence evidence, Observation)",
 "TaxonKey is one of (Haemorhous purpureus)",
 "Country is one of (American Samoa, Australia, Christmas Island, Cocos (Keeling) Islands, Cook Islands, Fiji, French Polynesia, Guam, Heard Island and McDonald Islands, Kiribati, Marshall Islands, Micronesia (Federated States of), Nauru, New Caledonia, New Zealand, Niue, Norfolk Island, Northern Mariana Islands, Palau, Papua New Guinea, Pitcairn, Samoa, Solomon Islands, Tokelau, Tonga, Tuvalu, United States Minor Outlying Islands, Vanuatu, Wallis and Futuna)"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0021777-250711103210423/datasets/export for details.
DOI: 10.1594/pangaea.887784
title: ADCP backscatter measurements during METEOR cruise M119

description: Parameters used to calculate volumetric backscatter Sv (dB) from echo intensity according to Mullison (2017)
DOI: 10.15468/dl.2aj22v
title: Occurrence Download

description: A dataset containing 271 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Claviceps purpurea",
 "Country is Australia",
 "HasCoordinate is true"
 ]
}

 The dataset includes 271 records from 7 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0021778-250711103210423/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.9tmsk8
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 "BasisOfRecord is one of (Human Observation, Machine Observation, Occurrence evidence, Observation)",
 "TaxonKey is one of (Haemorhous purpureus)",
 "Country is one of (Algeria, Angola, Benin, Botswana, British Indian Ocean Territory, Burkina Faso, Burundi, Cabo Verde, Cameroon, Central African Republic, Chad, Comoros, Congo, Congo, Democratic Republic of the, Côte d’Ivoire, Djibouti, Egypt, Equatorial Guinea, Eritrea, Eswatini, Ethiopia, French Southern Territories, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, Kenya, Lesotho, Liberia, Libya, Madagascar, Malawi, Mali, Mauritania, Mauritius, Mayotte, Morocco, Mozambique, Namibia, Niger, Nigeria, Réunion, Rwanda, Saint Helena, Ascension and Tristan da Cunha, Sao Tome and Principe, Senegal, Seychelles, Sierra Leone, Somalia, South Africa, South Sudan, Sudan, Tanzania, United Republic of, Togo, Tunisia, Uganda, Western Sahara, Zambia, Zimbabwe)"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0021779-250711103210423/datasets/export for details.
DOI: 10.1594/pangaea.806896
title: Age model of sediment core SO35-182
DOI: 10.15468/dl.88mygf
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Poa trivialis contracta, Poa trivialis effusa, Poa trivialis filiculmis, Poa trivialis flaccida, Poa trivialis flaccida, Poa trivialis glabra, Poa trivialis holsatia, Poa trivialis humilis, Poa trivialis koeleri, Poa trivialis laevis)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "OccurrenceStatus is Present",
 {
 "not" : {
 "BasisOfRecord" : [
 "is one of (Fossil, Living Specimen, Machine Observation)"
 ]
 }
 },
 "Continent is Europe",
 "Year is greater than or equal to 1980",
 "Year is less than or equal to 2024"
 ]
}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0021780-250711103210423/datasets/export for details.
DOI: 10.1594/pangaea.782426
title: (Table 13) Radiocarbon age of bottom sediments from the Southern Ocean
DOI: 10.1594/pangaea.833442
title: (Table S2) Globigerinoides sacculifer Mg/Ca data and temperature estimates for ODP Site 184-1143

description: DEPTH, sediment/rock [m] is given in mcd.
DOI: 10.1594/pangaea.858087
title: (Table 2) Composition of native Cu occurrences from two samples of DSDP Hole 22-216 and 92-597C

description: Average concentrations for point measurements under the assumption that the Cu**0 particles are homogeneous in depth and themain additional elements in the surface films are O and Cl (see the RBS data). It should be noted that the samples are inhomogeneous and therefore these results contain systematic deviations
DOI: 10.1594/pangaea.921929
title: Porewater profiles of reactive iron, sulfide and total alkalinity in mangroves (Karumba, Australia and Everglades, USA)

description: Porewater Fe²⁺, FeTot and sulfide (S²⁻) were measured by spectrophotometry. The 1,10-phenanthroline method was used to determine porewater Fe²⁺ and, after reducing Fe³⁺ by adding hydroxylamine, FeTot (APHA, 2005). Aqueous S⁻² was analysed using the methylene blue method (Cline, 1969). Groundwater total alkalinity was determined by a Gran titration using a titrator (Metrohm 888 Titrando with Tiamo light) with a precision better than 5 µM. Drifts and deviations in the acid concentration were corrected using certified reference materials (CRM batch 175 and CRM batch 178), as described by Dickson (2010).
DOI: 10.1594/pangaea.714650
title: Fe isotopic composition in continental iron cycle (Table 1)

description: The effect of continental weathering on the iron isotope compositions of natural materials is investigated. Unweathered igneous rocks, pelagic clay, and dust fall within the range delta56Fe=0 +/- 0.3 per mil. Rivers with large suspended loads also have delta56Fe values near zero. Dilute streams have delta56Fe values that trend towards lower delta56Fe (~-1) suggesting that dissolved riverine iron is isotopically light relative to igneous rocks. Bulk soil and soil leaches display systematically different delta56Fe profiles, indicating that isotopically distinct Fe pools are generated during pedogenesis. Nannofossil ooze, which contains Fe scavenged from the ocean water column, has delta56Fe c. 0, but is consistent with seawater dissolved Fe having negative delta56Fe. It is inferred that continental weathering under modern oxidizing Earth surface conditions preferentially releases dissolved Fe with negative delta56Fe, which is transported in rivers to the ocean. A preliminary analysis of the marine Fe budget suggests that riverine Fe has a substantial role in determining the delta56Fe of both the modern and ancient oceans, but other inputs, particularly that from diagenesis of marine sediments, may also be important. Since the chemical pathways of Fe processing during weathering are dependent on oxidation state and biological activity, Fe isotopes may prove useful for detecting changes in these parameters in the geologic past.
description: Supplement to: Fantle, Matthew S; DePaolo, Donald J (2004): Iron isotopic fractionation during continental weathering. Earth and Planetary Science Letters, 228(3-4), 547-562
DOI: 10.1594/pangaea.756801
title: (Table 2) Oxygen isotope composition of Fe-Mn crusts and nodules from Pacific seamounts
DOI: 10.1594/pangaea.756802
title: (Table 3) Oxygen and carbon isotope compositions of carbonate ion in phosphate lattice, Pacific seamounts
DOI: 10.1594/pangaea.770098
title: (Table 3.2.9) Methane amount and consumption in the upper meter of Upper Holocene sediments from the Barents Sea
DOI: 10.1594/pangaea.730126
title: (Table 66) Distribution of trace element contents in sediments from the Central American Trench at DSDP Site 67-499
DOI: 10.1594/pangaea.725333
title: (Table 4) Rare earth and some trace element contents in ocean ferromanganese crusts

description: Numbers (_1, _2 etc.) added to sample labels denote individual layers. 1 denotes an outer layer.
DOI: 10.1594/pangaea.854727
title: (Table 1) Bulk carbonate Site 199-1212B and 199-1221C d44Ca data

description: Note: all samples were measured for d44/40Ca at USGS-Menlo Park (Bullen), a conversion following Hippler et al. (2003), b dissolved bulk carbonate solutions from 1221C using ICP-ES at Univ. of California-Santa Cruz, from 1212B at Univ. of Texas at Arlington c 'calcite' fraction from 1221C using ICP-ES at Univ. of Texas at Arlington
DOI: 10.1594/pangaea.730171
title: (Table 29) Chemical composition of vein smectites from basalts of the Costa Rica Rift, DSDP Site 504B

description: Analyses have been carried out by T.I. Bortina in the Far East Geological Institute, Far East Scientific Center of the USSR Academy of Sciences.
DOI: 10.1594/pangaea.785603
title: (Table 7) Isotopic composition of organic carbon and percentage of newly formed organic carbon in total organic carbon content in surface layer bottom sediments of the White Sea in August 2006

description: Calculations were made using the isotope mass balance: 100A=Bx+(100-x)C, where A is d13C-Corg of sediments; i' is d13C-Corg in microorganism biomass (-20 per mil); i¡ is d13C-Corg in suspended matter (-29 per mil); x is percentage of newly formed Corg in total i¡org in the layer 0-0.5 cm.
DOI: 10.15468/dl.9hjqm8
title: Occurrence Download

description: A dataset containing 22 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Draba ritacuvana"
 ]
}

 The dataset includes 22 records from 8 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0021781-250711103210423/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.d28ypp
title: Occurrence Download

description: A dataset containing 3708 species occurrences available in GBIF matching the query:
{
 "and" : [
 "BasisOfRecord is Human Observation",
 "TaxonKey is Ilex cornuta"
 ]
}

 The dataset includes 3708 records from 28 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0021782-250711103210423/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.753503
title: (Table 8) Number of Amphiophiura sculptilis with filled stomachs
DOI: 10.1594/pangaea.771374
title: (Table 8.2.3) Redox potential and methane concentrations in surface layer bottom sediments of the Gdansk Bay, Baltic Sea
DOI: 10.1594/pangaea.771140
title: (Table 4.4.6) Formation- and consumption rates of methane in surface sediment layers of the Benguela Upwelling area per 1 sq. m
DOI: 10.1594/pangaea.761064
title: (Table 1) Heat flow measurements in the Central Pacific during Cruise 48 of R/V Vityaz

description: Eight measurements of heat flow in the Pacific floor were made during Cruise 48 of R/V Vityaz; four on the Manihiki Plateau, three - on the Marcus-Necker Rise, and one - in the Hawaiian Trough. Higher than average heat flows, up to 3.2 HFU, were recorded on submarine uplifts.
description: Supplement to: Kuz'min, Vladimir A; Suzyumov, Alexey E; Bezlyudov, A V (1972): Geothermal measurements on the Manihiki Plateau and the Marcus-Necker Rise (Pacific Ocean). Translated from Okeanologiya, 1972, 12(6), 1044-1046, Oceanology, 12(6), 867-869
DOI: 10.1594/pangaea.771267
title: (Table 6.3.1) Contains of organic carbon and total reduced sulfur in reduced bottom sediments from the Mozambique Channel, Indian Ocean
DOI: 10.1594/pangaea.771262
title: (Table 6.1.1) Abundance of anaerobic bacteria and formation rates of methane and reduced forms of sulfur in bottom sediments of the Somalia Basin, Indian Ocean
DOI: 10.15468/dl.g2y2mq
title: Occurrence Download

description: A dataset containing 202 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Draba porsildii"
 ]
}

 The dataset includes 202 records from 24 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0021783-250711103210423/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.205567
title: Relative abundances of middle Pleistocene benthic foraminifera in ODP Site 181-1125
DOI: 10.1594/pangaea.746197
title: (Table 26) Chemical composition of surface low-temperature hydrothermal Fe-Mn deposits from the eastern slope of the Mid-Atlantic Ridge rift valley, TAG hydrothermal field
DOI: 10.1594/pangaea.737633
title: (Table 1) Be isotope and Co concentrations for crusts Tasman, Nova, and Marshalls
DOI: 10.1594/pangaea.715231
title: (Table 1) Pb isotope ratios of oceanic crust from Manihiki and Ontong Java plateaus

description: Positions give the mean locations of the plateaus. SOTW are dredged samples
DOI: 10.1594/pangaea.771266
title: (Table 6.2.2) Rates of anaerobic processes in bottom sediments of the Tajura rift, Gulf of Aden
DOI: 10.1594/pangaea.771053
title: (Table 4.2.7) Sulfur and carbon speciations in the zone of stabilization of diagenetic processes in marine Holocene sediments of the Baltic Sea
DOI: 10.1594/pangaea.693819
title: (Table 1) Radiolarian events of the late Neogene in ODP Site 145-884 in the North Pacific
DOI: 10.1594/pangaea.807794
title: (Table 6) Position of calcareous nannofossil events at ODP Site 138-845

description: Sediment depth is given in mcd.
DOI: 10.1594/pangaea.708706
title: (Table 1) Concentrations of platinum-group elements and rhenium in sediments from DSDP Holes 62-465A and 91-596

description: Concentrations are given for dry sediments.
DOI: 10.1594/pangaea.770044
title: (Table 3.1.8) Mineral composition of surface layer bottom sediments from the White Sea

description: 0 = not found; &lt;1 = traces.
DOI: 10.1594/pangaea.890421
title: Age determination of JBL2 peat core
DOI: 10.1594/pangaea.389321
title: Water temperature real-time profiles from cruise ELMF997 (SCQC)

description: SCQC=quality controlled by Science Center. For definition of quality flags see hdl:10013/epic.31518.d001
DOI: 10.1594/pangaea.869241
title: (Table S1) Stable isotope data (δ¹³C) of epibenthic foraminifera Cibicides lobatulus from sediment core SO201-2-101KL (58°52' N, 170°41' E)
DOI: 10.1594/pangaea.389104
title: Water temperature XBT profiles from cruise 3EHF595 (SCQC)

description: SCQC=quality controlled by Science Center. For definition of quality flags see hdl:10013/epic.31518.d001
DOI: 10.15468/dl.d4cwrj
title: Occurrence Download

description: A dataset containing 5200 species occurrences available in GBIF matching the query:
{
 "and" : [
 "BasisOfRecord is one of (Human Observation, Specimen)",
 "Geometry POLYGON((-84.87 37.65,-69.7 37.65,-69.7 40.07,-84.87 40.07,-84.87 37.65))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "License is one of (CC0 1.0, CC-BY 4.0, CC-BY-NC 4.0)",
 "OccurrenceStatus is Present",
 "TaxonKey is Ochrophyta"
 ]
}

 The dataset includes 5200 records from 38 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0021784-250711103210423/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.785319
title: (Table 1-1) Concentrations of suspended matter, particulate organic carbon, and n-alkanes in waters of the White Sea in August 2003
DOI: 10.1594/pangaea.839891
title: (Table 5) Sm-Nd isotopic composition and trace element content of cleaning experiments an core-top foraminifera from the Pacific and Indian Ocean
DOI: 10.1594/pangaea.870410
title: Age control points of sediment core SO136-003/MD06-2990
DOI: 10.1594/pangaea.806898
title: Age model of sediment core SO35-211 (pilot core)
DOI: 10.1594/pangaea.834222
title: Age model of ODP Site 198-1209, part B: Hilgen et al. 2010

description: DEPTH, sediment/rock [m] is given in rmcd. Boundary tied to GTS2012 (66.04 Ma) and all cyclostratigraphic ages adjusted respectively. ie points from Paleocene are based on Hilgen et al (2010). Cretaceous Nanno datum from Lees (2005).
DOI: 10.1594/pangaea.775521
title: (Table 5) Average contents of the main ore chemical elements in Fe-Mn nodules and crusts from the Southwest Pacific
DOI: 10.1594/pangaea.770025
title: (Table 3.1.4b) Organic carbon contents and isotopic composition in surface layer bottom sediments of the White Sea
DOI: 10.1594/pangaea.770048
title: (Table 3.1.12) Daily production and consumption of methane in bottom sediments of the White Sea
DOI: 10.1594/pangaea.746082
title: (Table 1) Chemical composition of hydrothermal chimneys (organ pipes) from the Broken Spur hydrothermal field
DOI: 10.1594/pangaea.771351
title: (Table 6.6.1) Methane formation in the upper meter of bottom sediments from the Arabian Sea
DOI: 10.15468/dl.4fte3u
title: Occurrence Download

description: A dataset containing 5746 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is one of (Paspalum notatum)",
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 5746 records from 330 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0021785-250711103210423/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.771204
title: (Table 5.4.3) Abundance of microorganisms in wet bottom sediments of a section in the Pacific Ocean off Peru
DOI: 10.1594/pangaea.737635
title: (Table 2) Growth rates of crusts Tasman, Nova, and Marshalls
DOI: 10.1594/pangaea.775063
title: (Appendix B) Benthic foraminifera extinction group polpulation of ODP Site 202-1237

description: Sediment depth is given in mcd.
DOI: 10.15468/dl.ghmhf5
title: Occurrence Download

description: A dataset containing 496 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Callisia glandulosa"
 ]
}

 The dataset includes 496 records from 89 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0021786-250711103210423/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.1594/pangaea.738244
title: (Table S1) Comparison of ages for ODP Site 184-1146 biostratigraphic datums