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28 results for “carbon record”
Predicted Surficial Blue Carbon Maps for Blackbird Creek and St. Jones River Tidal Salt Marshes using 2014-2023 Landsat-8 OLI records
These data tables reflect the predictions of a gradient boosted trees model for predicting soil organic matter (SOM) in the surficial layer of tidal marsh soils. The model was trained on soil core data related to its corresponding spectral characteristics from decadal Landsat-8 Operational Land Imager data (see associated publication Warner et al. "Leveraging a decade of Landsat-8 spectral records for mapping blue carbon storage in tidal salt marshes"). This is a modeled data product designed to illustrate spatial patterns of organic matter storage as predicted by satellite data.
Figure 9 in Earliest known record of a hypercarnivorous dasyurid (Marsupialia), from newly discovered carbonates beyond the Riversleigh World Heritage Area, north Queensland
Figure 9. Comparison of the distribution of major cusps (in occlusal view) preserved in the Whollydooleya tomnpatrichorum holotype (QM F57892) with the RM3 of representative extinct (†) and recent hypercarnivorous dasyuromorphians. A-A', Whollydooleya tomnpatrichorum (†); B-B', Dasyurus maculatus, AR21693; C-C', Glaucodon ballaratensis, P207018 (†); D-D', Sarcophilus moornaensis, NMV P28684 (†); E-E', Sarcophilus harrisii, AR21694; F-F', Thylacinus cynocephalus, AR21695 (image reversed from the LM) (†). Abbreviations: end, entoconid 3 (orange dot); hyd, hypoconid (green dot); hyld, hypoconulid (purple dot); med, metaconid (blue dot); prd, protoconid (red dot). Not to scale.
Figure 5 in Earliest known record of a hypercarnivorous dasyurid (Marsupialia), from newly discovered carbonates beyond the Riversleigh World Heritage Area, north Queensland
Figure 5. Stereoviews of the holotype of Whollydooleya tomnpatrichorum n. gen. et sp. QM F57892 from a buccal oblique view. The margin at the right represents the missing flank of the trigonid.
Figure 4 in Earliest known record of a hypercarnivorous dasyurid (Marsupialia), from newly discovered carbonates beyond the Riversleigh World Heritage Area, north Queensland
Figure 4. Comparison of the holotype ofWhollydooleya tomnpatrichorum n. gen. et sp. QM F57892 with other hypercarnivorous dasyuromorphians (not to scale). A–C, W. tomnpatrichorum, QM F57892, m2 or m3. A, posterobuccal view; B-B', occlusal stereoview; C, oblique posterobuccal view. D–F, Dasyurus maculatus, AR21693, M3. D, buccal view; E-E', occlusal stereoview; F, oblique posterobuccal view. G–I, Sarcophilus harrisii, AR21694, M3. G, buccal oblique view; H-H', occlusal stereoview; I, oblique posterobuccal view. J–L, Thylacinus cynocephalus, AR21695, M talonid (reversed from the LM ). J, posterobuccal oblique view; K-K', occlusal stereoview; L, oblique posterobuccal view.
Figure 7. NMV P207018 in Earliest known record of a hypercarnivorous dasyurid (Marsupialia), from newly discovered carbonates beyond the Riversleigh World Heritage Area, north Queensland
Figure 7. NMV P207018, cast of a right dentary referred to Glaucodon ballaratensis by Gerdtz and Archbold (2003) that preserves the RC 1, P 1–2 and M 1–4. Left upper, buccal view. Left lower, lingual view. Right, occlusal view of the dentition. Scale bar = 1 cm. Photographs by Darren Bellingham.
Figure 6 in Earliest known record of a hypercarnivorous dasyurid (Marsupialia), from newly discovered carbonates beyond the Riversleigh World Heritage Area, north Queensland
Figure 6. Measurements of the holotype of Whollydooleya tomnpatrichorum n. gen. et sp. QM F57892 in occlusal stereoview. In the upper figure, the sides of the triangle link: 1, protoconid to entoconid; 2, protoconid to hypoconid; and 3, entoconid to hypoconid. The longitudinal measure is the distance between the protoconid and the apex of the hypoconulid. In the lower figure, the measures are: talonid width through the entoconid and hypoconid; talonid length from the ascending extremity of the cristid obliqua against the posterior flank of the trigonid to the posterior extremity of the crown through the hypoconulid; and maximum width of the damaged trigonid.
Figure 3 in Earliest known record of a hypercarnivorous dasyurid (Marsupialia), from newly discovered carbonates beyond the Riversleigh World Heritage Area, north Queensland
Figure 3. Photomicrographs of geological thin sections from Wholly Dooley Site later infills. A, Rhythmically banded calcite and goethite UXP; B, calcite filling void in layer 2 UXP; C, late cryptocrystalline silica (indicated by red arrow) filling fractures UXP; D, possible microbially mediated goethite precipitation (dendrites) in layer 2 PPL. WD2 numbers represent images of thin sections produced in the University of New South Wales.
Figure 1 in Earliest known record of a hypercarnivorous dasyurid (Marsupialia), from newly discovered carbonates beyond the Riversleigh World Heritage Area, north Queensland
Figure 1. Wholly Dooley Site, Wholly Dooley Hill, northwestern Queensland. The grey limestone massifs to the left are unfossiliferous Cambrian limestone and probably represent part of the western and southern walls of the original cave chamber. Fossiliferous Wholly Dooley matrix has been obtained from the excavated depression in the centre. About 7.2 km NE from this point is the approximate centre of the Riversleigh World Heritage Area; about 1.2 km NWN from this point is the southwestern boundary of the RWHA. Photo M. Archer.
Figure 2 in Earliest known record of a hypercarnivorous dasyurid (Marsupialia), from newly discovered carbonates beyond the Riversleigh World Heritage Area, north Queensland
Figure 2. Photomicrographs of geological thin sections from Wholly Dooley Site. A, Detrital quartz grains within the host micrite UXP; B, calcite raft fragment within host micrite UXP; C, erosional contact between host micrite (left) and overlying layer 1 (right) showing abundant aeolian-derived quartz within layer 1 UXP; D, Fe-oxide pelloids and detrital quartz grains within layer 1 PPL. WD2 numbers refer to thin section images produced in the School of Biological, Earth & Environmental Sciences.
Figure 8. NMV P28684 in Earliest known record of a hypercarnivorous dasyurid (Marsupialia), from newly discovered carbonates beyond the Riversleigh World Heritage Area, north Queensland
Figure 8. NMV P28684, right dentary of the holotype of Sarcophilus moornaensis preserving damaged M. A, Buccal view; B, buccal oblique 1–4 view; C, lingual view; D, occlusal view of M . Photographs by Erich Fitzgerald.
Text-fig. 3. Cave deposits exposed in Section No. 2 and recorded paleomagnetic polarities. 1 – reworked deposits; 2 – clayey silt, light brown with abundant black dots, structureless; 3 – clayey silt to silty clay, brown, chaotically deposited; 4 – clayey silt, light brown, structureless; 5 – clayey silt, light brown, laminated; 6 – clayey silt to silty clay, brown, structureless; 7 – clayey silt to silty clay, light brown, structureless; 8 – clayey silt, brown with abundant white carbonate clasts; 9 – clayey sandy silt, brown with abundant lighter clayey fragments; 10 – clayey sandy silt, brown with sporadic lighter clayey fragments. Geomagnetic polarity scale: black (N) – normal polarities, white (R) – reversed polarities, grey – intermediate or uninterpretable polarities. For more details see text. in New Updated Results Of Paleomagnetic Dating Of Cave Deposits Exposed In Za Hájovnou Cave, Javoříčko Karst
Text-fig. 3. Cave deposits exposed in Section No. 2 and recorded paleomagnetic polarities. 1 – reworked deposits; 2 – clayey silt, light brown with abundant black dots, structureless; 3 – clayey silt to silty clay, brown, chaotically deposited; 4 – clayey silt, light brown, structureless; 5 – clayey silt, light brown, laminated; 6 – clayey silt to silty clay, brown, structureless; 7 – clayey silt to silty clay, light brown, structureless; 8 – clayey silt, brown with abundant white carbonate clasts; 9 – clayey sandy silt, brown with abundant lighter clayey fragments; 10 – clayey sandy silt, brown with sporadic lighter clayey fragments. Geomagnetic polarity scale: black (N) – normal polarities, white (R) – reversed polarities, grey – intermediate or uninterpretable polarities. For more details see text.
Shatsky Rise, ODP Sites 1209 and 1210 Maastrichtian composite bulk carbonate stable isotopes, XRF scanning, biogenic barium, and benthic foraminiferal records
<p>A bulk composite carbonate stable isotope, X-ray fluorescence (XRF) scanning (elemental barium), biogenic barium and benthic foraminiferal record in deep sea sediments from the tropical Pacific was produced from 71.5 to 66 million years ago to determine variations in carbon export in the Pacific during the Maastrichtian. The cores were drilled on Shatsky Rise in the tropical Pacific at Ocean Drilling Program (ODP) Leg 198 Sites 1209 and 1210. Method details and interpretation are in the publication.</p>
Data from: An expanded Smithian-Spathian (Early Triassic) boundary from a reefal build-up record in Oman: Implications for conodont taxonomy, high-resolution biochronology and the carbon isotope record
<p><span>Some 2.7 Ma after the Permian-Triassic boundary mass extinction (PTME), a stepwise extinction of the nekton (ammonoids and conodonts) ended at the Smithian-Spathian boundary (SSB) during an episode of climate cooling. SSB records from continental shelves are usually affected by an unconformity, suggesting a forced regression of glacio-eustatic origin. Here, we document a new 30 m-thick SSB section from Jebel Aweri (Batain Plain, Oman) that provides an exceptionally complete and expanded record preserved in an exotic block. Most of this SSB section consists of metazoan reefal build-ups that formed in shallow water on an offshore sea mount. In Wadi Musjah (Hawasina nappes, Oman), another exotic block records the SSB in a deeper water setting represented by Hallstatt-type facies. These two sections provide a unique perspective on the early Spathian rapid re-diversification of conodonts. They led to a thorough revision of conodont taxonomy around the SSB and to the construction of the highest resolution biochronological scheme for this time interval in the Tethys. A total of five SSB sections from Oman representing both offshore sea mounts and lower slope deposits were included in a high-resolution, quantitative Unitary Associations analysis. The resulting 8 conodont biozones are intercalibrated with ammonoid zones and with the carbonate carbon isotope record ultimately placing the SSB in the interval of separation between UAZ<sub>3</sub> and UAZ<sub>4</sub>. Only the association of <em>Nv. pingdingshanensis</em> with <em>Ic. crassatus</em> can be used to unambiguously characterize the base of the Spathian.</span></p>
Sonification of the atmospheric carbon record: 1988–1992 and 2014–2019
<p><span>These two pieces are part of a collection of sound compositions called <em>Timescales</em>, which sonifies datasets spanning different time scales of the atmospheric carbon record. Sonification is analogous to visualization. In visualizations, data is mapped to an image; in sonification data is mapped to sound. <em>In Situ 1988</em> and <em>In Situ 2014</em> both sonify five years of atmospheric carbon data from the Mauna Loa Observatory, commonly known as the Keeling Curve. The pieces present the carbon record at weekly, monthly, and yearly timescales with a musical scale and translate historical time to musical time. Unlike standard graphical presentations of data, these sound compositions allow the listener to hear the data as physical resonance over time. </span></p>
Sonification of the atmospheric carbon record over the past 800,000 years
<p><span>This piece is part of a collection of sound compositions called <em>Timescales</em>, which sonifies datasets spanning different time scales of the atmospheric carbon record. Glaciations is a musical sonification of atmospheric carbon dioxide inferred from ice cores, from 800,000 years ago to the present. This scale encompasses the small shifts in earth's orbit which drove the rise and fall of eight successive ice ages and alternating warm periods. The intention behind the compositional choices in this composition is to evoke a sense of vastness and wonder, and to create a sonic landscape of planetary motion and deep time.</span></p>
Data from: An expanded Smithian-Spathian (Early Triassic) boundary from a reefal build-up record in Oman: Implications for conodont taxonomy, high-resolution biochronology and the carbon isotope record
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Sonification of the atmospheric carbon record: 1988–1992 and 2014–2019
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Data from: Metabolic proxy for cephalopods: Stable carbon isotope values recorded in different biogenic carbonates
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Sonification of the atmospheric carbon record over the past 800,000 years
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Data from: A decline in molluscan carbonate production driven by the loss of vegetated habitats encoded in the Holocene sedimentary record of the Gulf of Trieste
Carbonate sediments in non-vegetated habitats on the NE Adriatic shelf are dominated by shells of molluscs. However, the rate of carbonate molluscan production prior to the 20th century eutrophication and overfishing on this and other shelves remains unknown because (1) monitoring of ecosystems prior to the 20th century was scarce and (2) ecosystem history inferred from cores is masked by condensation and mixing. Here, based on geochronological dating of four bivalve species, carbonate production during the Holocene is assessed in the Gulf of Trieste, where algal and seagrass habitats underwent a major decline during the 20th century. Assemblages of sand-dwelling Gouldia minima and opportunistic Corbula gibba are time-averaged to > 1,000 years and C. gibba shells are older by >2,000 years than shells of co-occurring G. minima. This age difference is driven by temporally disjunct production of two species coupled with decimeter-scale mixing. Stratigraphic unmixing shows that Corbula gibba declined in abundance during the highstand phase and increased again in the 20th century. In contrast, one of the major contributors to carbonate sands, Gouldia minima, increased in abundance during the highstand phase, but declined to almost zero abundance over the past two centuries. G. minima and herbivorous gastropods associated with macroalgae or seagrasses are abundant in the top-core increments but are rare alive. Although G. minima is not limited to vegetated habitats, it is abundant in such habitats elsewhere in the Mediterranean Sea. This live-dead mismatch reflects the difference between highstand baseline communities (with soft-bottom vegetated zones and hard-bottom Arca beds) and present-day oligophotic communities with organic-loving species. Therefore, the decline in light penetration and the loss of vegetated habitats with high molluscan production traces back to the 19th century. More than 50% of the shells on the seafloor in the Gulf of Trieste reflect inactive production that was sourced by heterozoan carbonate factory in algal or seagrass habitats.
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Allen Brain Atlas
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International Brain Laboratory public data
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