Recent cryovolcanic activity at Occator crater on Ceres
| العنوان: | Recent cryovolcanic activity at Occator crater on Ceres |
|---|---|
| المؤلفون: | Carol A. Raymond, Jian-Yang Li, C. M. Pieters, H. Hiesinger, Guneshwar Thangjam, Julie C. Castillo-Rogez, Andreas Nathues, Jan Hendrik Pasckert, Nico Schmedemann, Ottaviano Ruesch, Edward A. Cloutis, L. Le Corre, Kurt Mengel, Vishnu Reddy, Michael J. Hoffmann, David A. Williams |
| المصدر: | Nature Astronomy. 4:794-801 |
| بيانات النشر: | Springer Science and Business Media LLC, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Nine million, Paleontology, 010504 meteorology & atmospheric sciences, Impact crater, 0103 physical sciences, Astronomy and Astrophysics, Extrusive, Chronostratigraphy, 010303 astronomy & astrophysics, 01 natural sciences, Geology, 0105 earth and related environmental sciences, Chronology |
| الوصف: | NASA’s Dawn mission revealed a partially differentiated Ceres that has experienced cryovolcanic activity throughout its history up to the recent past. The Occator impact crater, which formed ~22 Myr ago, displays bright deposits (faculae) across its floor whose origins are still under debate: two competing hypotheses involve eruption of brines from the crust–mantle transition boundary (remnants of an ancient ocean) or alternatively from a shallow impact melt chamber. Here we report new constraints on the history of Occator that help in testing the hypotheses of its formation. We used high-resolution images of the Dawn Framing Camera obtained close to the end of the mission. We found a long-lasting and recent period of cryovolcanic activity, which started ≤9 Myr ago and lasted for several million years. Several resurfacing events, affecting the faculae and some (dark) solidified impact melt units, are shown to have occurred millions of years after crater formation and the dissipation of the impact-generated heat. These findings are indicative of a deep-seated brine source. Extensive volatile-driven emplacement of bright material occurred in the central floor, causing its subsidence due to mass loss at depth. Finally, a thick (extrusive) dome of bright material was raised in the central depression. The derived chronostratigraphy of Occator is consistent with a recently geologically active world, where salts play a major role in preserving liquid in a heat-starved body. High-spatial-resolution images of the bright points at Occator crater on Ceres, taken during the second extended Dawn mission, allowed reconstruction of the chronology of their formation. The area experienced extensive cryovolcanism less than nine million years ago that lasted several million years, indicating recent geological activity. |
| تدمد: | 2397-3366 |
| DOI: | 10.1038/s41550-020-1146-8 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::7230aabf587b324b90d1119f1e72d2c1 https://doi.org/10.1038/s41550-020-1146-8 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........7230aabf587b324b90d1119f1e72d2c1 |
| قاعدة البيانات: | OpenAIRE |
| ResultId |
1 |
|---|---|
| Header |
edsair OpenAIRE edsair.doi...........7230aabf587b324b90d1119f1e72d2c1 870 3 unknown 869.710632324219 |
| PLink |
https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&scope=site&db=edsair&AN=edsair.doi...........7230aabf587b324b90d1119f1e72d2c1&custid=s6537998&authtype=sso |
| FullText |
Array
(
[Availability] => 0
)
Array ( [0] => Array ( [Url] => https://explore.openaire.eu/search/publication?articleId=doi_________::7230aabf587b324b90d1119f1e72d2c1# [Name] => EDS - OpenAIRE [Category] => fullText [Text] => View record in OpenAIRE [MouseOverText] => View record in OpenAIRE ) ) |
| Items |
Array
(
[Name] => Title
[Label] => Title
[Group] => Ti
[Data] => Recent cryovolcanic activity at Occator crater on Ceres
)
Array ( [Name] => Author [Label] => Authors [Group] => Au [Data] => <searchLink fieldCode="AR" term="%22Carol+A%2E+Raymond%22">Carol A. Raymond</searchLink><br /><searchLink fieldCode="AR" term="%22Jian-Yang+Li%22">Jian-Yang Li</searchLink><br /><searchLink fieldCode="AR" term="%22C%2E+M%2E+Pieters%22">C. M. Pieters</searchLink><br /><searchLink fieldCode="AR" term="%22H%2E+Hiesinger%22">H. Hiesinger</searchLink><br /><searchLink fieldCode="AR" term="%22Guneshwar+Thangjam%22">Guneshwar Thangjam</searchLink><br /><searchLink fieldCode="AR" term="%22Julie+C%2E+Castillo-Rogez%22">Julie C. Castillo-Rogez</searchLink><br /><searchLink fieldCode="AR" term="%22Andreas+Nathues%22">Andreas Nathues</searchLink><br /><searchLink fieldCode="AR" term="%22Jan+Hendrik+Pasckert%22">Jan Hendrik Pasckert</searchLink><br /><searchLink fieldCode="AR" term="%22Nico+Schmedemann%22">Nico Schmedemann</searchLink><br /><searchLink fieldCode="AR" term="%22Ottaviano+Ruesch%22">Ottaviano Ruesch</searchLink><br /><searchLink fieldCode="AR" term="%22Edward+A%2E+Cloutis%22">Edward A. Cloutis</searchLink><br /><searchLink fieldCode="AR" term="%22L%2E+Le+Corre%22">L. Le Corre</searchLink><br /><searchLink fieldCode="AR" term="%22Kurt+Mengel%22">Kurt Mengel</searchLink><br /><searchLink fieldCode="AR" term="%22Vishnu+Reddy%22">Vishnu Reddy</searchLink><br /><searchLink fieldCode="AR" term="%22Michael+J%2E+Hoffmann%22">Michael J. Hoffmann</searchLink><br /><searchLink fieldCode="AR" term="%22David+A%2E+Williams%22">David A. Williams</searchLink> ) Array ( [Name] => TitleSource [Label] => Source [Group] => Src [Data] => <i>Nature Astronomy</i>. 4:794-801 ) Array ( [Name] => Publisher [Label] => Publisher Information [Group] => PubInfo [Data] => Springer Science and Business Media LLC, 2020. ) Array ( [Name] => DatePubCY [Label] => Publication Year [Group] => Date [Data] => 2020 ) Array ( [Name] => Subject [Label] => Subject Terms [Group] => Su [Data] => <searchLink fieldCode="DE" term="%22Nine+million%22">Nine million</searchLink><br /><searchLink fieldCode="DE" term="%22Paleontology%22">Paleontology</searchLink><br /><searchLink fieldCode="DE" term="%22010504+meteorology+%26+atmospheric+sciences%22">010504 meteorology & atmospheric sciences</searchLink><br /><searchLink fieldCode="DE" term="%22Impact+crater%22">Impact crater</searchLink><br /><searchLink fieldCode="DE" term="%220103+physical+sciences%22">0103 physical sciences</searchLink><br /><searchLink fieldCode="DE" term="%22Astronomy+and+Astrophysics%22">Astronomy and Astrophysics</searchLink><br /><searchLink fieldCode="DE" term="%22Extrusive%22">Extrusive</searchLink><br /><searchLink fieldCode="DE" term="%22Chronostratigraphy%22">Chronostratigraphy</searchLink><br /><searchLink fieldCode="DE" term="%22010303+astronomy+%26+astrophysics%22">010303 astronomy & astrophysics</searchLink><br /><searchLink fieldCode="DE" term="%2201+natural+sciences%22">01 natural sciences</searchLink><br /><searchLink fieldCode="DE" term="%22Geology%22">Geology</searchLink><br /><searchLink fieldCode="DE" term="%220105+earth+and+related+environmental+sciences%22">0105 earth and related environmental sciences</searchLink><br /><searchLink fieldCode="DE" term="%22Chronology%22">Chronology</searchLink> ) Array ( [Name] => Abstract [Label] => Description [Group] => Ab [Data] => NASA’s Dawn mission revealed a partially differentiated Ceres that has experienced cryovolcanic activity throughout its history up to the recent past. The Occator impact crater, which formed ~22 Myr ago, displays bright deposits (faculae) across its floor whose origins are still under debate: two competing hypotheses involve eruption of brines from the crust–mantle transition boundary (remnants of an ancient ocean) or alternatively from a shallow impact melt chamber. Here we report new constraints on the history of Occator that help in testing the hypotheses of its formation. We used high-resolution images of the Dawn Framing Camera obtained close to the end of the mission. We found a long-lasting and recent period of cryovolcanic activity, which started ≤9 Myr ago and lasted for several million years. Several resurfacing events, affecting the faculae and some (dark) solidified impact melt units, are shown to have occurred millions of years after crater formation and the dissipation of the impact-generated heat. These findings are indicative of a deep-seated brine source. Extensive volatile-driven emplacement of bright material occurred in the central floor, causing its subsidence due to mass loss at depth. Finally, a thick (extrusive) dome of bright material was raised in the central depression. The derived chronostratigraphy of Occator is consistent with a recently geologically active world, where salts play a major role in preserving liquid in a heat-starved body. High-spatial-resolution images of the bright points at Occator crater on Ceres, taken during the second extended Dawn mission, allowed reconstruction of the chronology of their formation. The area experienced extensive cryovolcanism less than nine million years ago that lasted several million years, indicating recent geological activity. ) Array ( [Name] => ISSN [Label] => ISSN [Group] => ISSN [Data] => 2397-3366 ) Array ( [Name] => DOI [Label] => DOI [Group] => ID [Data] => 10.1038/s41550-020-1146-8 ) Array ( [Name] => URL [Label] => Access URL [Group] => URL [Data] => <link linkTarget="URL" linkTerm="https://explore.openaire.eu/search/publication?articleId=doi_________::7230aabf587b324b90d1119f1e72d2c1" linkWindow="_blank">https://explore.openaire.eu/search/publication?articleId=doi_________::7230aabf587b324b90d1119f1e72d2c1</link><br /><link linkTarget="URL" linkTerm="https://doi.org/10.1038/s41550-020-1146-8" linkWindow="_blank">https://doi.org/10.1038/s41550-020-1146-8</link> ) Array ( [Name] => Copyright [Label] => Rights [Group] => Cpyrght [Data] => CLOSED ) Array ( [Name] => AN [Label] => Accession Number [Group] => ID [Data] => edsair.doi...........7230aabf587b324b90d1119f1e72d2c1 ) |
| RecordInfo |
Array
(
[BibEntity] => Array
(
[Identifiers] => Array
(
[0] => Array
(
[Type] => doi
[Value] => 10.1038/s41550-020-1146-8
)
)
[Languages] => Array
(
[0] => Array
(
[Text] => Undetermined
)
)
[PhysicalDescription] => Array
(
[Pagination] => Array
(
[PageCount] => 8
[StartPage] => 794
)
)
[Subjects] => Array
(
[0] => Array
(
[SubjectFull] => Nine million
[Type] => general
)
[1] => Array
(
[SubjectFull] => Paleontology
[Type] => general
)
[2] => Array
(
[SubjectFull] => 010504 meteorology & atmospheric sciences
[Type] => general
)
[3] => Array
(
[SubjectFull] => Impact crater
[Type] => general
)
[4] => Array
(
[SubjectFull] => 0103 physical sciences
[Type] => general
)
[5] => Array
(
[SubjectFull] => Astronomy and Astrophysics
[Type] => general
)
[6] => Array
(
[SubjectFull] => Extrusive
[Type] => general
)
[7] => Array
(
[SubjectFull] => Chronostratigraphy
[Type] => general
)
[8] => Array
(
[SubjectFull] => 010303 astronomy & astrophysics
[Type] => general
)
[9] => Array
(
[SubjectFull] => 01 natural sciences
[Type] => general
)
[10] => Array
(
[SubjectFull] => Geology
[Type] => general
)
[11] => Array
(
[SubjectFull] => 0105 earth and related environmental sciences
[Type] => general
)
[12] => Array
(
[SubjectFull] => Chronology
[Type] => general
)
)
[Titles] => Array
(
[0] => Array
(
[TitleFull] => Recent cryovolcanic activity at Occator crater on Ceres
[Type] => main
)
)
)
[BibRelationships] => Array
(
[HasContributorRelationships] => Array
(
[0] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => Carol A. Raymond
)
)
)
[1] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => Jian-Yang Li
)
)
)
[2] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => C. M. Pieters
)
)
)
[3] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => H. Hiesinger
)
)
)
[4] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => Guneshwar Thangjam
)
)
)
[5] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => Julie C. Castillo-Rogez
)
)
)
[6] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => Andreas Nathues
)
)
)
[7] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => Jan Hendrik Pasckert
)
)
)
[8] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => Nico Schmedemann
)
)
)
[9] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => Ottaviano Ruesch
)
)
)
[10] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => Edward A. Cloutis
)
)
)
[11] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => L. Le Corre
)
)
)
[12] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => Kurt Mengel
)
)
)
[13] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => Vishnu Reddy
)
)
)
[14] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => Michael J. Hoffmann
)
)
)
[15] => Array
(
[PersonEntity] => Array
(
[Name] => Array
(
[NameFull] => David A. Williams
)
)
)
)
[IsPartOfRelationships] => Array
(
[0] => Array
(
[BibEntity] => Array
(
[Dates] => Array
(
[0] => Array
(
[D] => 10
[M] => 08
[Type] => published
[Y] => 2020
)
)
[Identifiers] => Array
(
[0] => Array
(
[Type] => issn-print
[Value] => 23973366
)
[1] => Array
(
[Type] => issn-locals
[Value] => edsair
)
)
[Numbering] => Array
(
[0] => Array
(
[Type] => volume
[Value] => 4
)
)
[Titles] => Array
(
[0] => Array
(
[TitleFull] => Nature Astronomy
[Type] => main
)
)
)
)
)
)
)
|
| IllustrationInfo |