The Impact of Gender Disparity of Physician and Patient
Open Access
- 31 December 2021
- journal article
- letter
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences of the United States of America
- Vol. 16 (34), 331-332
- https://doi.org/10.1073/pnas.1800097115
Abstract
The Great Unconformity, a profound gap in Earth’s stratigraphic record often evident below the base of the Cambrian system, has remained among the most enigmatic field observations in Earth science for over a century. While long associated directly or indirectly with the occurrence of the earliest complex animal fossils, a conclusive explanation for the formation and global extent of the Great Unconformity has remained elusive. Here we show that the Great Unconformity is associated with a set of large global oxygen and hafnium isotope excursions in magmatic zircon that suggest a late Neoproterozoic crustal erosion and sediment subduction event of unprecedented scale. These excursions, the Great Unconformity, preservational irregularities in the terrestrial bolide impact record, and the first-order pattern of Phanerozoic sedimentation can together be explained by spatially heterogeneous Neoproterozoic glacial erosion totaling a global average of 3–5 vertical kilometers, along with the subsequent thermal and isostatic consequences of this erosion for global continental freeboard. Significance It has long been observed that the sequence of sedimentary rocks deposited in the past half-billion years often sharply overlies older igneous or metamorphic basement at an erosional surface known as the Great Unconformity. We provide evidence that this unconformity may record rapid erosion during Neoproterozoic “snowball Earth” glaciations. We show that the extent of Phanerozoic sedimentation in shallow continental seas can be accurately reproduced by modeling the accommodation space produced by the proposed glacial erosion, underlining the importance of glaciation as a means for lowering erosional base level. These results provide constraints on the sedimentary and geochemical environment in which the first multicellular animals evolved and diversified in the “Cambrian explosion” following the unconformity.Keywords
This publication has 26 references indexed in Scilit:
- The Association of Gender Concordance and Primary Care Physicians' Perceptions of Their PatientsWomen & Health, 2008
- Sex-related differences in the presentation, treatment and outcomes among patients with acute coronary syndromes: the Global Registry of Acute Coronary EventsHeart, 2008
- Effects of Socioeconomic Status on Access to Invasive Cardiac Procedures and on Mortality after Acute Myocardial InfarctionThe New England Journal of Medicine, 1999
- And Then There were More? The Effect of Organizational Sex Composition on the Hiring and Promotion of ManagersAmerican Sociological Review, 1998
- Comparison of presentation, treatment, and outcome of acute myocardial infarction in men versus women (the Myocardial Infarction Triage and Intervention Registry)The American Journal of Cardiology, 1996
- Gender in medical encounters: An analysis of physician and patient communication in a primary care setting.Health Psychology, 1994
- Gender in medical encounters: An analysis of physician and patient communication in a primary care setting.Health Psychology, 1994
- Interruptions in Group Discussions: The Effects of Gender and Group CompositionAmerican Sociological Review, 1989
- In-group bias in the minimal intergroup situation: A cognitive-motivational analysis.Psychological Bulletin, 1979
- In-group bias in the minimal intergroup situation: A cognitive-motivational analysis.Psychological Bulletin, 1979