Abstract：
:Climate strongly affects the production of sediment from mountain catchments as well as its transport and deposition within adjacent sedimentary basins. However, identifying climatic influences on basin stratigraphy is complicated by nonlinearities, feedback loops, lag times, buffering and convergence among processes within the sediment routeing system. The Palaeocene/Eocene thermal maximum (PETM) arguably represents the most abrupt and dramatic instance of global warming in the Cenozoic era and has been proposed to be a geologic analogue for anthropogenic climate change. Here we evaluate the fluvial response in western Colorado to the PETM. Concomitant with the carbon isotope excursion marking the PETM we document a basin-wide shift to thick, multistoried, sheets of sandstone characterized by variable channel dimensions, dominance of upper flow regime sedimentary structures, and prevalent crevasse splay deposits. This progradation of coarse-grained lithofacies matches model predictions for rapid increases in sediment flux and discharge, instigated by regional vegetation overturn and enhanced monsoon precipitation. Yet the change in fluvial deposition persisted long after the approximately 200,000-year-long PETM with its increased carbon dioxide levels in the atmosphere, emphasizing the strong role the protracted transmission of catchment responses to distant depositional systems has in constructing large-scale basin stratigraphy. Our results, combined with evidence for increased dissolved loads and terrestrial clay export to world oceans, indicate that the transient hyper-greenhouse climate of the PETM may represent a major geomorphic 'system-clearing event', involving a global mobilization of dissolved and solid sediment loads on Earth's surface.
journal_name
Naturejournal_title
Natureauthors
Foreman BZ,Heller PL,Clementz MTdoi
10.1038/nature11513subject
Has Abstractpub_date
2012-11-01 00:00:00pages
92-5issue
7422eissn
0028-0836issn
1476-4687pii
nature11513journal_volume
491pub_type
历史文章,杂志文章相关文献
NATURE文献大全abstract：:Nuclear magic numbers correspond to fully occupied energy shells of protons or neutrons inside atomic nuclei. Doubly magic nuclei, with magic numbers for both protons and neutrons, are spherical and extremely rare across the nuclear landscape. Although the sequence of magic numbers is well established for stable nucle...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/s41586-019-1155-x
更新日期：2019-05-01 00:00:00
abstract：:The evolutionary history of extant hominoids (humans and apes) remains poorly understood. The African fossil record during the crucial time period, the Miocene epoch, largely comprises isolated jaws and teeth, and little is known about ape cranial evolution. Here we report on the, to our knowledge, most complete fossi...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/nature23456
更新日期：2017-08-09 00:00:00
abstract：:Established infections with the human and simian immunodeficiency viruses (HIV and SIV, respectively) are thought to be permanent with even the most effective immune responses and antiretroviral therapies only able to control, but not clear, these infections. Whether the residual virus that maintains these infections ...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/nature12519
更新日期：2013-10-03 00:00:00
abstract：:Thyroid hormones and retinoic acid function through nuclear receptors that belong to the steroid/thyroid-hormone receptor superfamily. Thyroid hormone receptors (TRs) and retinoic acid receptors (RARs) require auxiliary nuclear proteins for efficient DNA binding. Here we report that retinoid X receptors RXR alpha is o...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/355441a0
更新日期：1992-01-30 00:00:00
abstract：:Hypermethylation of the promoters of tumour suppressor genes represses transcription of these genes, conferring growth advantages to cancer cells. How these changes arise is poorly understood. Here we show that the activity of oxygen-dependent ten-eleven translocation (TET) enzymes is reduced by tumour hypoxia in huma...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/nature19081
更新日期：2016-09-01 00:00:00
abstract：:Non-coding apurinic/apyrimidinic (AP) sites in DNA are continually created in cells both spontaneously and by damage-specific DNA glycosylases. The biologically critical human base excision repair enzyme APE1 cleaves the DNA sugar-phosphate backbone at a position 5' of AP sites to prime DNA repair synthesis. Here we r...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/35000249
更新日期：2000-01-27 00:00:00
abstract：:Historical ecologists working in the Neotropics argue that the present natural environment is an historical product of human intentionality and ingenuity, a creation that is imposed, built, managed and maintained by the collective multigenerational knowledge and experience of Native Americans. In the past 12,000 years...
journal_title：Nature
pub_type： 历史文章,杂志文章
doi：10.1038/35041555
更新日期：2000-11-09 00:00:00
abstract：:Protonic ceramic fuel cells, like their higher-temperature solid-oxide fuel cell counterparts, can directly use both hydrogen and hydrocarbon fuels to produce electricity at potentially more than 50 per cent efficiency1,2. Most previous direct-hydrocarbon fuel cell research has focused on solid-oxide fuel cells based ...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/s41586-018-0082-6
更新日期：2018-05-01 00:00:00
abstract：:High-pressure transitions are thought to modify hydrogen molecules to a molecular metallic solid and finally to an atomic metal1, which is predicted to have exotic physical properties and the topology of a two-component (electron and proton) superconducting superfluid condensate2,3. Therefore, understanding such trans...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/s41586-019-1565-9
更新日期：2019-09-01 00:00:00
abstract：:Molecular-scale manipulation of electronic and ionic charge accumulation in materials is the backbone of electrochemical energy storage1-4. Layered van der Waals (vdW) crystals are a diverse family of materials into which mobile ions can electrochemically intercalate into the interlamellar gaps of the host atomic latt...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/s41586-018-0205-0
更新日期：2018-06-01 00:00:00
abstract：:The guinea-pig (Cavia porcellus), traditionally classified as a New World hystricomorph rodent, often shows anomalous morphological and molecular features in comparison with other eutherian mammals. For example, its insulin differs from that of other mammals in anabolic and growth-promoting activities and in its capab...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/351649a0
更新日期：1991-06-20 00:00:00
abstract：:Most sensory information destined for the neocortex is relayed through the thalamus, where considerable transformation occurs1,2. One means of transformation involves interactions between excitatory thalamocortical neurons that carry data to the cortex and inhibitory neurons of the thalamic reticular nucleus (TRN) tha...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/s41586-020-2512-5
更新日期：2020-07-01 00:00:00
abstract：:The growth cycle in nutrient-rich, aquatic environments starts with a diatom bloom that ends in mass sinking of ungrazed cells and phytodetritus. The low grazing pressure on these blooms has been attributed to the inability of overwintering copepod populations to track them temporally. We tested an alternative explana...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/nature02526
更新日期：2004-05-27 00:00:00
abstract：:The presence of papillomaviruses in epithelial-derived cancers from several animal species has led to the speculation that these viruses may also have a pathogenic role in the development of certain human carcinomas, particularly those associated with the anogenital tract. Recently, human papillomavirus (HPV) DNA has ...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/300771a0
更新日期：1982-12-23 00:00:00
abstract：:The Redfield ratio of 106 carbon:16 nitrogen:1 phosphorus in marine phytoplankton is one of the foundations of ocean biogeochemistry, with applications in algal physiology, palaeoclimatology and global climate change. However, this ratio varies substantially in response to changes in algal nutrient status and taxonomi...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/nature03125
更新日期：2004-12-16 00:00:00
abstract：:ATP is the dominant energy source in animals for mechanical and electrical work (for example, muscle contraction or neuronal firing). For chemical work, there is an equally important role for NADPH, which powers redox defence and reductive biosynthesis. The most direct route to produce NADPH from glucose is the oxidat...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/nature13236
更新日期：2014-06-12 00:00:00
abstract：:AFTER exposure to secretagogues the small intestine changes from a tissue that absorbs fluid and electrolyte from lumen to blood into a tissue that secretes electrolyte and fluid into the lumen(1-4). It has been shown that this secretion results from an increase in the passive Cl(-) permeability of the mucosal border,...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/279446a0
更新日期：1979-05-31 00:00:00
abstract：:The foundation of western civilization owes much to the high fertility of bread wheat, which results from the stability of its polyploid genome. Despite possessing multiple sets of related chromosomes, hexaploid (bread) and tetraploid (pasta) wheat both behave as diploids at meiosis. Correct pairing of homologous chro...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/nature04434
更新日期：2006-02-09 00:00:00
abstract：:Cryo-electron microscopy (cryo-EM) has the capacity to capture molecular machines in action1-3. ATP-binding cassette (ABC) exporters are highly dynamic membrane proteins that extrude a wide range of substances from the cytosol4-6 and thereby contribute to essential cellular processes, adaptive immunity and multidrug r...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/s41586-019-1391-0
更新日期：2019-07-01 00:00:00
abstract：:Bcl-2 was isolated from the t(14;18) chromosomal breakpoint in follicular B-cell lymphoma. Bcl-2 has the unique oncogenic role of extending cell survival by inhibiting a variety of apoptotic deaths. An emerging family of Bcl-2-related proteins share two highly conserved regions referred to here as Bcl-2 homology 1 and...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/369321a0
更新日期：1994-05-26 00:00:00
abstract：:For cells of the innate immune system to mount a host defence response to infection, they must recognize products of microbial pathogens such as lipopolysaccharide (LPS), the endotoxin secreted by Gram-negative bacteria. These cellular responses require intracellular signalling pathways, such as the four MAP kinase (M...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/386296a0
更新日期：1997-03-20 00:00:00
abstract：:Promoters are DNA sequences that have an essential role in controlling gene expression. While recent whole cancer genome analyses have identified numerous hotspots of somatic point mutations within promoters, many have not yet been shown to perturb gene expression or drive cancer development. As such, positive selecti...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/nature17437
更新日期：2016-04-14 00:00:00
abstract：:Osteoarthritis-the most common form of age-related degenerative whole-joint disease1-is primarily characterized by cartilage destruction, as well as by synovial inflammation, osteophyte formation and subchondral bone remodelling2,3. However, the molecular mechanisms that underlie the pathogenesis of osteoarthritis are...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/s41586-019-0920-1
更新日期：2019-02-01 00:00:00
abstract：:Gene targeting in embryonic stem cells has become the principal technology for manipulation of the mouse genome, offering unrivalled accuracy in allele design and access to conditional mutagenesis. To bring these advantages to the wider research community, large-scale mouse knockout programmes are producing a permanen...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/nature10163
更新日期：2011-06-15 00:00:00
abstract：:The overexpression of defined transcription factors in somatic cells results in their reprogramming into induced pluripotent stem (iPS) cells. The extremely low efficiency and slow kinetics of in vitro reprogramming suggest that further rare events are required to generate iPS cells. The nature and identity of these e...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/nature08285
更新日期：2009-08-27 00:00:00
abstract：:Phosphorylation of the carboxy-terminal domain of the largest subunit of RNA polymerase II is believed to control the transition from transcription initiation to elongation. The general transcription factor IIH (TFIIH) contains a kinase activity capable of phosphorylating this domain. Factors that promote the associat...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/358641a0
更新日期：1992-08-20 00:00:00
abstract：:BINDING of the TATA-binding protein (TBP) to the TATA box is required for transcription from many eukaryotic promoters in gene expression. Regulation of this binding is therefore likely to be an important determinant of promoter activity. Incorporation of the TATA sequence into nucleosomes dramatically reduces transcr...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/370481a0
更新日期：1994-08-11 00:00:00
abstract：:Countless millions of people have died from tuberculosis, a chronic infectious disease caused by the tubercle bacillus. The complete genome sequence of the best-characterized strain of Mycobacterium tuberculosis, H37Rv, has been determined and analysed in order to improve our understanding of the biology of this slow-...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/31159
更新日期：1998-06-11 00:00:00
abstract：:The generation of strong serological responses to protein antigens in experimental animals usually requires the use of potent adjuvants, most of which cannot be used in human or veterinary vaccines because of deleterious side effects. Attempting to circumvent this problem, we have assessed an adjuvant-free antigen-del...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/327059a0
更新日期：1987-05-07 00:00:00
abstract：:Age-related macular degeneration (AMD), a leading cause of blindness worldwide, is as prevalent as cancer in industrialized nations. Most blindness in AMD results from invasion of the retina by choroidal neovascularisation (CNV). Here we show that the eosinophil/mast cell chemokine receptor CCR3 is specifically expres...
journal_title：Nature
pub_type： 杂志文章
doi：10.1038/nature08151
更新日期：2009-07-09 00:00:00
