{"title":"Synsedimentary deformation in Upper Cretaceous–Lower Paleogene limestones within a thrust anticline of the Umbria-Marche Apennines, Italy","authors":"Sofia Tognaccini, E. Tavarnelli, A. Montanari","doi":"10.1130/2019.2542(11)","DOIUrl":"https://doi.org/10.1130/2019.2542(11)","url":null,"abstract":"","PeriodicalId":176885,"journal":{"name":"250 Million Years of Earth History in Central Italy: Celebrating 25 Years of the Geological Observatory of Coldigioco","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129234046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Miše, V. Serneels, A. Matana, A. Montanari, A. Kirigin
{"title":"Provenance studies of amphorae from the Greek colony Pharos on the island of Hvar, Croatia","authors":"M. Miše, V. Serneels, A. Matana, A. Montanari, A. Kirigin","doi":"10.1130/2019.2542(27)","DOIUrl":"https://doi.org/10.1130/2019.2542(27)","url":null,"abstract":"","PeriodicalId":176885,"journal":{"name":"250 Million Years of Earth History in Central Italy: Celebrating 25 Years of the Geological Observatory of Coldigioco","volume":"AES-4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126499652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A record of the micrometeorite flux during an enigmatic extraterrestrial3He anomaly in the Turonian (Late Cretaceous)","authors":"E. Martin, B. Schmitz, A. Montanari","doi":"10.1130/2019.2542(15)","DOIUrl":"https://doi.org/10.1130/2019.2542(15)","url":null,"abstract":"We reconstructed a record of the micrometeorite flux in the Late Cretaceous using the distribution of extraterrestrial spinel grains across an ~2 m.y. interval of elevated 3He in the Turonian Stage (ca. 92–90 Ma). From ~30 m of the limestone succession in the Bottaccione section, Italy, a total of 979 kg of rock from levels below and within the 3He excursion yielded 603 spinel grains (32–355 µm size). Of those, 115 represent equilibrated ordinary chondritic chromite (EC). Within the 3He excursion, there is no change in the number of EC grains per kilogram of sediment, but H-chondritic grains dominate over L and LL grains (70%, 27%, and 3%), contrary to the interval before the excursion, where the relation between the three groups (50%, 44%, and 6%) is similar to today and to the Early Cretaceous. Intriguingly, within the 3He anomaly, there is also a factor-of-five increase of vanadium-rich chrome spinels likely originating from achondritic and unequilibrated ordinary chondritic meteorites. The 3He anomaly has an unusually spiky and temporal progression not readily explained by present models for delivery of extraterrestrial dust to Earth. Previous suggestions of a relation to a comet or asteroid shower possibly associated with dust-producing lunar impacts are not supported by our data. Instead, the spinel data preliminary indicate a more general disturbance of the asteroid belt, where different parent bodies or source regions of micrometeorites were affected at the same time. More spinel grains need to be recovered and more oxygen isotopic analyses of grains are required to resolve the origin of the 3He anomaly. (Less)","PeriodicalId":176885,"journal":{"name":"250 Million Years of Earth History in Central Italy: Celebrating 25 Years of the Geological Observatory of Coldigioco","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121238329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A review of the Earth history record in the Cretaceous, Paleogene, and Neogene pelagic carbonates of the Umbria-Marche Apennines (Italy): Twenty-five years of the Geological Observatory of Coldigioco","authors":"W. Álvarez","doi":"10.1130/2019.2542(01)","DOIUrl":"https://doi.org/10.1130/2019.2542(01)","url":null,"abstract":"","PeriodicalId":176885,"journal":{"name":"250 Million Years of Earth History in Central Italy: Celebrating 25 Years of the Geological Observatory of Coldigioco","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127619113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. Kudielka, M. Bar-Matthews, M. Gilmour, A. Ayalon, C. Koeberl, A. Montanari
{"title":"Implications for central Italy paleoclimate from 95,000 yr B.P. until the early Holocene as evident from Frasassi Cave speleothems","authors":"G. Kudielka, M. Bar-Matthews, M. Gilmour, A. Ayalon, C. Koeberl, A. Montanari","doi":"10.1130/2019.2542(24)","DOIUrl":"https://doi.org/10.1130/2019.2542(24)","url":null,"abstract":"","PeriodicalId":176885,"journal":{"name":"250 Million Years of Earth History in Central Italy: Celebrating 25 Years of the Geological Observatory of Coldigioco","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131793850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Bice, A. Csank, A. Macalady, A. Montanari, D. Tierney, A. Baldanza
{"title":"Paleoclimate implications of earliest Pleistocene tree rings from the Dunarobba Fossil Forest, Umbria, Italy","authors":"D. Bice, A. Csank, A. Macalady, A. Montanari, D. Tierney, A. Baldanza","doi":"10.1130/2019.2542(22)","DOIUrl":"https://doi.org/10.1130/2019.2542(22)","url":null,"abstract":"","PeriodicalId":176885,"journal":{"name":"250 Million Years of Earth History in Central Italy: Celebrating 25 Years of the Geological Observatory of Coldigioco","volume":"327 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115873905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
W. Álvarez, J. Belza, L. Chan, P. Claeys, P. Geiser, M. Menichetti, D. Shimabukuro, E. Tavarnelli
{"title":"Expansion breccias in Lower Cretaceous Apennine pelagic limestones: I. Geological observations","authors":"W. Álvarez, J. Belza, L. Chan, P. Claeys, P. Geiser, M. Menichetti, D. Shimabukuro, E. Tavarnelli","doi":"10.1130/2019.2542(12)","DOIUrl":"https://doi.org/10.1130/2019.2542(12)","url":null,"abstract":"","PeriodicalId":176885,"journal":{"name":"250 Million Years of Earth History in Central Italy: Celebrating 25 Years of the Geological Observatory of Coldigioco","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123580086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"87Sr/86Sr record from the Lower Cretaceous pelagic Maiolica limestone (Central Apennines, Italy) and its offset from the global seawater reference curve","authors":"J. Belza, W. Álvarez, F. Vanhaecke, P. Claeys","doi":"10.1130/2019.2542(05)","DOIUrl":"https://doi.org/10.1130/2019.2542(05)","url":null,"abstract":"","PeriodicalId":176885,"journal":{"name":"250 Million Years of Earth History in Central Italy: Celebrating 25 Years of the Geological Observatory of Coldigioco","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123908824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. Koeberl, A. Montanari, T. Schulz, B. Mougel, F. Moynier
{"title":"Late Eocene impact ejecta in Italy: Attempts to constrain the impactor composition from isotopic analyses of spinel-rich samples","authors":"C. Koeberl, A. Montanari, T. Schulz, B. Mougel, F. Moynier","doi":"10.1130/ABS/2017AM-306995","DOIUrl":"https://doi.org/10.1130/ABS/2017AM-306995","url":null,"abstract":"","PeriodicalId":176885,"journal":{"name":"250 Million Years of Earth History in Central Italy: Celebrating 25 Years of the Geological Observatory of Coldigioco","volume":"13 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116554956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Late Pleistocene tectonic tilting of the Frasassi anticline from offset stalagmites in the Grotta Grande del Vento (Marche, Italy)","authors":"D. Bice, M. Lacroce, D. McGee, A. Montanari","doi":"10.1130/2019.2542(25)","DOIUrl":"https://doi.org/10.1130/2019.2542(25)","url":null,"abstract":"","PeriodicalId":176885,"journal":{"name":"250 Million Years of Earth History in Central Italy: Celebrating 25 Years of the Geological Observatory of Coldigioco","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115507644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}