Get quick answers to your questions about the article from our AI researcher chatbot
{'id': 'https://openalex.org/W2078788152', 'doi': 'https://doi.org/10.1130/g20008.1', 'title': 'Valanginian Weissert oceanic anoxic event', 'display_name': 'Valanginian Weissert oceanic anoxic event', 'publication_year': 2004, 'publication_date': '2004-01-01', 'ids': {'openalex': 'https://openalex.org/W2078788152', 'doi': 'https://doi.org/10.1130/g20008.1', 'mag': '2078788152'}, 'language': 'en', 'primary_location': {'is_oa': False, 'landing_page_url': 'https://doi.org/10.1130/g20008.1', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S56162041', 'display_name': 'Geology', 'issn_l': '0091-7613', 'issn': ['0091-7613', '1943-2682'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310319845', 'host_organization_name': 'Geological Society of America', 'host_organization_lineage': ['https://openalex.org/P4310319845'], 'host_organization_lineage_names': ['Geological Society of America'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, 'type': 'article', 'type_crossref': 'journal-article', 'indexed_in': ['crossref'], 'open_access': {'is_oa': False, 'oa_status': 'closed', 'oa_url': None, 'any_repository_has_fulltext': False}, 'authorships': [{'author_position': 'first', 'author': {'id': 'https://openalex.org/A5059153091', 'display_name': 'Elisabetta Erba', 'orcid': 'https://orcid.org/0000-0001-6213-6550'}, 'institutions': [{'id': 'https://openalex.org/I189158943', 'display_name': 'University of Milan', 'ror': 'https://ror.org/00wjc7c48', 'country_code': 'IT', 'type': 'education', 'lineage': ['https://openalex.org/I189158943']}], 'countries': ['IT'], 'is_corresponding': False, 'raw_author_name': 'Elisabetta Erba', 'raw_affiliation_strings': ['Dipartimento di Scienze della Terra “A. Desio,” Università degli Studi di Milano, via Mangiagalli 34, 20133 Milano, Italy'], 'affiliations': [{'raw_affiliation_string': 'Dipartimento di Scienze della Terra “A. Desio,” Università degli Studi di Milano, via Mangiagalli 34, 20133 Milano, Italy', 'institution_ids': ['https://openalex.org/I189158943']}]}, {'author_position': 'middle', 'author': {'id': 'https://openalex.org/A5038445834', 'display_name': 'Annachiara Bartolini', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I39804081', 'display_name': 'Sorbonne Université', 'ror': 'https://ror.org/02en5vm52', 'country_code': 'FR', 'type': 'education', 'lineage': ['https://openalex.org/I39804081']}, {'id': 'https://openalex.org/I1294671590', 'display_name': 'Centre National de la Recherche Scientifique', 'ror': 'https://ror.org/02feahw73', 'country_code': 'FR', 'type': 'government', 'lineage': ['https://openalex.org/I1294671590']}], 'countries': ['FR'], 'is_corresponding': False, 'raw_author_name': 'Annachiara Bartolini', 'raw_affiliation_strings': ['R 32 du Centre National de la Recherche Scientifique, Micropaléontologie, case 104, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris 05, France'], 'affiliations': [{'raw_affiliation_string': 'R 32 du Centre National de la Recherche Scientifique, Micropaléontologie, case 104, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris 05, France', 'institution_ids': ['https://openalex.org/I39804081', 'https://openalex.org/I1294671590']}]}, {'author_position': 'last', 'author': {'id': 'https://openalex.org/A5113927781', 'display_name': 'Roger L. Larson', 'orcid': None}, 'institutions': [{'id': 'https://openalex.org/I17626003', 'display_name': 'University of Rhode Island', 'ror': 'https://ror.org/013ckk937', 'country_code': 'US', 'type': 'education', 'lineage': ['https://openalex.org/I17626003']}], 'countries': ['US'], 'is_corresponding': False, 'raw_author_name': 'Roger L. Larson', 'raw_affiliation_strings': ['Graduate School of Oceanography, University of Rhode Island Narragansett, Rhode Island 02882 (USA)'], 'affiliations': [{'raw_affiliation_string': 'Graduate School of Oceanography, University of Rhode Island Narragansett, Rhode Island 02882 (USA)', 'institution_ids': ['https://openalex.org/I17626003']}]}], 'institution_assertions': [], 'countries_distinct_count': 3, 'institutions_distinct_count': 4, 'corresponding_author_ids': [], 'corresponding_institution_ids': [], 'apc_list': None, 'apc_paid': None, 'fwci': 7.618, 'has_fulltext': True, 'fulltext_origin': 'ngrams', 'cited_by_count': 241, 'citation_normalized_percentile': {'value': 0.999538, 'is_in_top_1_percent': True, 'is_in_top_10_percent': True}, 'cited_by_percentile_year': {'min': 98, 'max': 99}, 'biblio': {'volume': '32', 'issue': '2', 'first_page': '149', 'last_page': '149'}, 'is_retracted': False, 'is_paratext': False, 'primary_topic': {'id': 'https://openalex.org/T10109', 'display_name': 'Paleontology and Stratigraphy of Fossils', 'score': 0.9997, 'subfield': {'id': 'https://openalex.org/subfields/1911', 'display_name': 'Paleontology'}, 'field': {'id': 'https://openalex.org/fields/19', 'display_name': 'Earth and Planetary Sciences'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, 'topics': [{'id': 'https://openalex.org/T10109', 'display_name': 'Paleontology and Stratigraphy of Fossils', 'score': 0.9997, 'subfield': {'id': 'https://openalex.org/subfields/1911', 'display_name': 'Paleontology'}, 'field': {'id': 'https://openalex.org/fields/19', 'display_name': 'Earth and Planetary Sciences'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, {'id': 'https://openalex.org/T10995', 'display_name': 'Methane Hydrates and Related Phenomena', 'score': 0.999, 'subfield': {'id': 'https://openalex.org/subfields/2304', 'display_name': 'Environmental Chemistry'}, 'field': {'id': 'https://openalex.org/fields/23', 'display_name': 'Environmental Science'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}, {'id': 'https://openalex.org/T13177', 'display_name': 'Geological and Geophysical Studies', 'score': 0.9986, 'subfield': {'id': 'https://openalex.org/subfields/1907', 'display_name': 'Geology'}, 'field': {'id': 'https://openalex.org/fields/19', 'display_name': 'Earth and Planetary Sciences'}, 'domain': {'id': 'https://openalex.org/domains/3', 'display_name': 'Physical Sciences'}}], 'keywords': [{'id': 'https://openalex.org/keywords/marie-curie', 'display_name': 'Marie curie', 'score': 0.45999324}], 'concepts': [{'id': 'https://openalex.org/C2778805511', 'wikidata': 'https://www.wikidata.org/wiki/Q1713', 'display_name': 'Citation', 'level': 2, 'score': 0.50219226}, {'id': 'https://openalex.org/C2993243194', 'wikidata': 'https://www.wikidata.org/wiki/Q7186', 'display_name': 'Marie curie', 'level': 3, 'score': 0.45999324}, {'id': 'https://openalex.org/C161191863', 'wikidata': 'https://www.wikidata.org/wiki/Q199655', 'display_name': 'Library science', 'level': 1, 'score': 0.4241823}, {'id': 'https://openalex.org/C127313418', 'wikidata': 'https://www.wikidata.org/wiki/Q1069', 'display_name': 'Geology', 'level': 0, 'score': 0.41904584}, {'id': 'https://openalex.org/C15708023', 'wikidata': 'https://www.wikidata.org/wiki/Q80083', 'display_name': 'Humanities', 'level': 1, 'score': 0.36081386}, {'id': 'https://openalex.org/C95457728', 'wikidata': 'https://www.wikidata.org/wiki/Q309', 'display_name': 'History', 'level': 0, 'score': 0.33503377}, {'id': 'https://openalex.org/C142362112', 'wikidata': 'https://www.wikidata.org/wiki/Q735', 'display_name': 'Art', 'level': 0, 'score': 0.17732617}, {'id': 'https://openalex.org/C41008148', 'wikidata': 'https://www.wikidata.org/wiki/Q21198', 'display_name': 'Computer science', 'level': 0, 'score': 0.06856087}, {'id': 'https://openalex.org/C2910001868', 'wikidata': 'https://www.wikidata.org/wiki/Q458', 'display_name': 'European union', 'level': 2, 'score': 0.0}, {'id': 'https://openalex.org/C144133560', 'wikidata': 'https://www.wikidata.org/wiki/Q4830453', 'display_name': 'Business', 'level': 0, 'score': 0.0}, {'id': 'https://openalex.org/C105639569', 'wikidata': 'https://www.wikidata.org/wiki/Q582577', 'display_name': 'Economic policy', 'level': 1, 'score': 0.0}], 'mesh': [], 'locations_count': 3, 'locations': [{'is_oa': False, 'landing_page_url': 'https://doi.org/10.1130/g20008.1', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S56162041', 'display_name': 'Geology', 'issn_l': '0091-7613', 'issn': ['0091-7613', '1943-2682'], 'is_oa': False, 'is_in_doaj': False, 'is_core': True, 'host_organization': 'https://openalex.org/P4310319845', 'host_organization_name': 'Geological Society of America', 'host_organization_lineage': ['https://openalex.org/P4310319845'], 'host_organization_lineage_names': ['Geological Society of America'], 'type': 'journal'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, {'is_oa': False, 'landing_page_url': 'https://hal.archives-ouvertes.fr/hal-00021484', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4306402512', 'display_name': 'HAL (Le Centre pour la Communication Scientifique Directe)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1294671590', 'host_organization_name': 'Centre National de la Recherche Scientifique', 'host_organization_lineage': ['https://openalex.org/I1294671590'], 'host_organization_lineage_names': ['Centre National de la Recherche Scientifique'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}, {'is_oa': False, 'landing_page_url': 'https://hal.science/hal-00021484', 'pdf_url': None, 'source': {'id': 'https://openalex.org/S4306402512', 'display_name': 'HAL (Le Centre pour la Communication Scientifique Directe)', 'issn_l': None, 'issn': None, 'is_oa': True, 'is_in_doaj': False, 'is_core': False, 'host_organization': 'https://openalex.org/I1294671590', 'host_organization_name': 'Centre National de la Recherche Scientifique', 'host_organization_lineage': ['https://openalex.org/I1294671590'], 'host_organization_lineage_names': ['Centre National de la Recherche Scientifique'], 'type': 'repository'}, 'license': None, 'license_id': None, 'version': None, 'is_accepted': False, 'is_published': False}], 'best_oa_location': None, 'sustainable_development_goals': [{'display_name': 'Life below water', 'score': 0.71, 'id': 'https://metadata.un.org/sdg/14'}], 'grants': [], 'datasets': [], 'versions': [], 'referenced_works_count': 29, 'referenced_works': ['https://openalex.org/W1639686691', 'https://openalex.org/W1976390071', 'https://openalex.org/W1995131505', 'https://openalex.org/W2008060356', 'https://openalex.org/W2010662875', 'https://openalex.org/W2027622090', 'https://openalex.org/W2058695708', 'https://openalex.org/W2059131953', 'https://openalex.org/W2063130237', 'https://openalex.org/W2064374123', 'https://openalex.org/W2066176154', 'https://openalex.org/W2069163245', 'https://openalex.org/W2079553405', 'https://openalex.org/W2079852953', 'https://openalex.org/W2086676264', 'https://openalex.org/W2088715187', 'https://openalex.org/W2088841279', 'https://openalex.org/W2116562977', 'https://openalex.org/W2133102175', 'https://openalex.org/W2144682646', 'https://openalex.org/W2153536201', 'https://openalex.org/W2186063172', 'https://openalex.org/W2218636372', 'https://openalex.org/W2465743285', 'https://openalex.org/W2620774234', 'https://openalex.org/W3015260043', 'https://openalex.org/W4245574492', 'https://openalex.org/W633602047', 'https://openalex.org/W650588533'], 'related_works': ['https://openalex.org/W649500018', 'https://openalex.org/W4241433233', 'https://openalex.org/W2949373604', 'https://openalex.org/W2534478056', 'https://openalex.org/W2416719889', 'https://openalex.org/W2258848616', 'https://openalex.org/W2144031701', 'https://openalex.org/W2083105088', 'https://openalex.org/W2034434811', 'https://openalex.org/W1043536958'], 'abstract_inverted_index': {'Research': [0], 'Article|': [1], 'February': [2], '01,': [3], '2004': [4], 'Valanginian': [5, 265, 322, 372, 420, 496], 'Weissert': [6, 266], 'oceanic': [7, 267, 421], 'anoxic': [8, 268, 422], 'event': [9, 423, 509], 'Elisabetta': [10, 12, 115, 258], 'Erba;': [11], 'Erba': [13, 116], '1Dipartimento': [14, 117], 'di': [15, 23, 118, 126], 'Scienze': [16, 119], 'della': [17, 120], 'Terra': [18, 121], '“A.Desio,”': [19, 122], 'Università': [20, 123], 'degli': [21, 124], 'Studi': [22, 125], 'Milano,': [24, 29, 127, 132], 'via': [25, 128, 461], 'Mangiagalli,': [26, 129], '34,': [27, 130], '20133': [28, 131], 'Italy': [30, 133], 'Search': [31, 70, 100, 255, 292, 299, 309, 311], 'for': [32, 71, 101, 438, 530], 'other': [33, 72, 102], 'works': [34, 73, 103], 'by': [35, 74, 104], 'this': [36, 75, 105, 545], 'author': [37, 76, 106], 'on:': [38, 77, 107], 'GSW': [39, 78, 108], 'Google': [40, 79, 109], 'Scholar': [41, 80, 110], 'Annachiara': [42, 44, 134, 260], 'Bartolini;': [43], 'Bartolini': [45, 135], '2R': [46, 136], '32': [47, 137, 211, 272], 'du': [48, 138], 'Centre': [49, 139], 'National': [50, 140], 'de': [51, 141], 'la': [52, 142], 'Recherche': [53, 143], 'Scientifique,': [54, 144], 'Micropaléontologie,': [55, 145], 'case': [56, 146], '104,': [57, 147], 'Université': [58, 148], 'Pierre': [59, 149], 'et': [60, 150], 'Marie': [61, 151], 'Curie,': [62, 152], '4': [63, 153], 'Place': [64, 154], 'Jussieu,': [65, 155], '75252': [66, 156], 'Paris': [67, 157], '05,': [68, 158], 'France': [69, 159], 'Roger': [81, 84, 160, 262], 'L.': [82, 85, 161, 263], 'Larson': [83, 86, 162], '3Graduate': [87, 163], 'School': [88, 164], 'of': [89, 92, 165, 168, 179, 207, 353, 361, 364, 392, 397, 426, 441, 456, 463, 492, 513, 518, 522, 535], 'Oceanography,': [90, 166], 'University': [91, 167], 'Rhode': [93, 96, 169, 172], 'Island,': [94, 170], 'Narragansett,': [95, 171], 'Island': [97, 173], '02882,': [98, 174], 'USA': [99, 175], 'Author': [111], 'and': [112, 317, 340, 366, 386, 406, 447, 477, 503, 520, 533], 'Article': [113, 215], 'Information': [114], 'Publisher:': [176], 'Geological': [177, 205], 'Society': [178, 206], 'America': [180, 208], 'Received:': [181, 186, 217, 222], '16': [182, 218], 'Jul': [183, 219], '2003': [184, 189, 193, 220, 225, 229], 'Revision': [185, 221], '20': [187, 223], 'Oct': [188, 192, 224, 228], 'Accepted:': [190, 226], '21': [191, 227], 'First': [194, 230], 'Online:': [195, 231], '03': [196, 232], 'Mar': [197, 233], '2017': [198, 234], 'Online': [199], 'ISSN:': [200, 203], '1943-2682': [201], 'Print': [202], '0091-7613': [204], 'Geology': [209, 270], '(2004)': [210], '(2):': [212, 273], '149–152.': [213, 274], 'https://doi.org/10.1130/G20008.1': [214, 276], 'history': [216], 'Cite': [235], 'View': [236], 'This': [237], 'Citation': [238, 241, 257], 'Add': [239], 'to': [240, 342, 382, 414, 544, 549], 'Manager': [242], 'Share': [243, 245], 'Icon': [244, 251], 'Facebook': [246], 'Twitter': [247], 'LinkedIn': [248], 'MailTo': [249], 'Tools': [250, 252], 'Get': [253], 'Permissions': [254], 'Site': [256], 'Erba,': [259], 'Bartolini,': [261], 'Larson;': [264], 'event.': [269], '2004;;': [271], 'doi:': [275], 'Download': [277], 'citation': [278], 'file:': [279], 'Ris': [280], '(Zotero)': [281], 'Refmanager': [282], 'EasyBib': [283], 'Bookends': [284], 'Mendeley': [285], 'Papers': [286], 'EndNote': [287], 'RefWorks': [288], 'BibTex': [289], 'toolbar': [290, 295], 'search': [291, 296, 297, 305], 'Dropdown': [293], 'Menu': [294], 'input': [298, 300], 'auto': [301], 'suggest': [302], 'filter': [303], 'your': [304, 550], 'All': [306], 'ContentBy': [307], 'SocietyGeology': [308], 'Advanced': [310], 'Abstract': [312], 'Biotic': [313], 'changes': [314, 376], 'in': [315, 333, 346, 359, 402, 407, 410, 481], 'nannofossils': [316, 502], 'radiolarians': [318], 'associated': [319], 'with': [320], 'the': [321, 334, 347, 371, 403, 408, 411, 415, 427, 457, 474, 495, 499, 511, 514], 'δ13C': [323, 373, 416, 515], 'anomaly': [324], 'are': [325, 338, 377], 'documented': [326, 345], 'at': [327, 466, 510], 'Ocean': [328], 'Drilling': [329], 'Program': [330], 'Hole': [331], '1149B': [332], 'Pacific': [335, 409], 'Ocean:': [336], 'they': [337], 'coeval': [339], 'similar': [341], 'those': [343], 'previously': [344], 'Tethys,': [348], 'suggesting': [349], 'a': [350, 367, 387, 419, 444, 507], 'global': [351, 383], 'perturbation': [352], 'marine': [354], 'ecosystems.': [355], 'A': [356], 'marked': [357], 'increase': [358, 440], 'abundance': [360], 'Diazomatolithus,': [362], 'absence': [363], 'nannoconids,': [365], 'Pantanellium': [368], 'peak': [369], 'characterize': [370], 'excursion.': [374, 516], 'Such': [375], 'interpreted': [378], 'as': [379], 'being': [380], 'due': [381], 'enhanced': [384], 'fertility': [385], 'biocalcification': [388], 'crisis': [389], 'under': [390], 'conditions': [391], 'excess': [393], 'CO2.': [394], 'The': [395], 'occurrence': [396], 'organic': [398, 523], 'C–rich': [399, 524], 'black': [400, 525], 'shales': [401, 526], 'Southern': [404], 'Alps': [405], 'interval': [412], 'corresponding': [413], 'excursion': [417], 'suggests': [418], '(OAE).': [424], 'Volcanism': [425], 'Paranà-Etendeka': [428], 'large': [429], 'igneous': [430], 'province': [431], '(ca.': [432], '132': [433], 'Ma)': [434], 'was': [435], 'presumably': [436, 528], 'responsible': [437, 529], 'an': [439, 453], 'CO2,': [442], 'triggering': [443], 'climate': [445], 'change': [446], 'accelerated': [448], 'hydrological': [449], 'cycling,': [450], 'possibly': [451], 'causing': [452], 'indirect': [454], 'fertilization': [455], 'oceans.': [458, 484], 'Widespread': [459], 'nutrification': [460], 'introduction': [462], 'biolimiting': [464], 'metals': [465], 'spreading': [467], 'ridges': [468], 'could': [469], 'have': [470, 542, 558], 'significantly': [471], 'increased': [472], 'during': [473, 494], 'Gondwana': [475], 'breakup': [476], 'simultaneous': [478], 'tectonic': [479], 'events': [480], 'three': [482], 'separate': [483], 'There': [485], 'is': [486], 'no': [487], 'paleontological': [488], 'or': [489], 'δ18O': [490], 'evidence': [491], 'warming': [493], 'OAE.': [497], 'On': [498], 'contrary,': [500], 'both': [501], 'oxygen': [504], 'isotopes': [505], 'record': [506], 'cooling': [508], 'climax': [512], 'Weathering': [517], 'basalts': [519], 'burial': [521], 'were': [527], 'CO2': [531], 'drawdown': [532], 'establishment': [534], 'reversed': [536], 'greenhouse': [537], 'conditions.': [538], 'You': [539], 'do': [540], 'not': [541], 'access': [543], 'content,': [546], 'please': [547], 'speak': [548], 'institutional': [551], 'administrator': [552], 'if': [553], 'you': [554, 556], 'feel': [555], 'should': [557], 'access.': [559]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2078788152', 'counts_by_year': [{'year': 2024, 'cited_by_count': 16}, {'year': 2023, 'cited_by_count': 17}, {'year': 2022, 'cited_by_count': 13}, {'year': 2021, 'cited_by_count': 22}, {'year': 2020, 'cited_by_count': 16}, {'year': 2019, 'cited_by_count': 13}, {'year': 2018, 'cited_by_count': 7}, {'year': 2017, 'cited_by_count': 9}, {'year': 2016, 'cited_by_count': 12}, {'year': 2015, 'cited_by_count': 15}, {'year': 2014, 'cited_by_count': 12}, {'year': 2013, 'cited_by_count': 11}, {'year': 2012, 'cited_by_count': 8}], 'updated_date': '2025-01-09T16:40:41.048687', 'created_date': '2016-06-24'}