I Had an Abortion: Midwest Women, Stigma and Disclosure

Since the legalization of abortion is 1973, both pro-choice and pro-life sides of the debate have struggled for political and cultural influence. Meanwhile, the voices of women who have utilized abortion serves remain unheard, their stories invisible. Largely, this silence surrounding women\u27s abortion experiences has been attributed to the stigma that is associated with the abortion procedure. Other have argued that women are not silent about their abortion experiences, but that they navigate the complex political and social contexts of their lives by managing the stigmatized identity of having had an abortion. By utilizing in-depth, semi-structured interviews, and encouraging a feminist participatory model, my research brings the standpoints of women who have had abortions to the center of the discussion about the relationship between stigma and disclosure practices. Ultimately, I argue that abortion stigma is created by the context of women\u27s lives, and that disclosure practices vary based of women\u27s perception of that stigma. Because of the diversity of women\u27s lives, generalization about the value certain types of disclosure cannot be made

Global urban environmental change drives adaptation in white clover

Urbanization transforms environments in ways that alter biological evolution. We examined whether urban environmental change drives parallel evolution by sampling 110,019 white clover plants from 6169 populations in 160 cities globally. Plants were assayed for a Mendelian antiherbivore defense that also affects tolerance to abiotic stressors. Urban-rural gradients were associated with the evolution of clines in defense in 47% of cities throughout the world. Variation in the strength of clines was explained by environmental changes in drought stress and vegetation cover that varied among cities. Sequencing 2074 genomes from 26 cities revealed that the evolution of urban-rural clines was best explained by adaptive evolution, but the degree of parallel adaptation varied among cities. Our results demonstrate that urbanization leads to adaptation at a global scale

CHARACTERIZING THE FACIES AND STRATIGRAPHY OF THE ENCHANTED LAKE OUTCROP IN JEZERO CRATER, MARS

International audienceJezero crater once hosted an open lake system ~3.8 Ga when water is considered to have been abundant on the surface of Mars [1]. A sedimentary delta deposit formed at the western rim of the crater and remains well-preserved on the surface today [1,2]. Studying the stratigraphy of the Jezero delta can be used to better constrain the fluvial and climate history of early Mars [e.g., 2,3].Here we present analysis of the Enchanted Lake outcrop, which is located on the eroded southern margin of the delta deposit (Fig. 1). This outcrop was the Mars 2020 Perseverance rover’s first direct encounter with sedimentary rocks at the base of the delta deposit. Data of this outcrop were first collected from sols ~420-426 of the Perseverance mission. The rover then traversed to the northeast to explore the Hawksbill Gap area before returning to Enchanted Lake for sols ~565-600. This study identifies and characterizes the facies within the Enchanted Lake sedimentary succession, and interprets the paleoenvironment of the outcrop in context with the larger deltaic system

LITHOFACIES, FLOW DIRECTIONS, AND PRELIMINARY DEPOSITIONAL INTERPRETATIONS OF LEDGE-FORMING SANDSTONES AT ALAGNAK, JEZERO CRATER, MARS

International audienceThe Mars 2020 Perseverance rover is exploring a sedimentary deposit interpreted to be theremnants of a delta within Jezero crater, a 45 km diameter Late Noachian-aged crater. During itsexploration of the “lower delta” exposure of the western delta/fan in Jezero crater, Mars (Fig. 1), Perseveranceacquired image and composition data from Alagnak, a ~2 m thick, well-exposed outcrop of clastic sedimentaryrock located at Cape Nukshak (Fig. 1).This outcrop was thoroughly documented from multiple angles at a cm-scale by the Mastcam-Z camerasystem [1] and the Supercam Remote Micro-Imager (RMI) [2] on the Perseverance rover. Dip and strikemeasurements of sedimentary beds were collected from 3D reconstructions of Mastcam-Z stereo-imagescollected using the Planetary Robotics software tools PRoViP and PRo3D [3].In this study, we examine the physical sedimentology and stratigraphic context of the Alagnakoutcrop. The preliminary depositional interpretation of Alagnak is as a prograding, subaqueous fan builtthrough the deposition of many, meter-scale, gravity driven, sediment-rich flows. Flow directions rangedbetween NNE and SW, with principal directions toward SE and E

CHARACTERIZING THE FACIES AND STRATIGRAPHY OF THE ENCHANTED LAKE OUTCROP IN JEZERO CRATER, MARS

International audienceJezero crater once hosted an open lake system ~3.8 Ga when water is considered to have been abundant on the surface of Mars [1]. A sedimentary delta deposit formed at the western rim of the crater and remains well-preserved on the surface today [1,2]. Studying the stratigraphy of the Jezero delta can be used to better constrain the fluvial and climate history of early Mars [e.g., 2,3].Here we present analysis of the Enchanted Lake outcrop, which is located on the eroded southern margin of the delta deposit (Fig. 1). This outcrop was the Mars 2020 Perseverance rover’s first direct encounter with sedimentary rocks at the base of the delta deposit. Data of this outcrop were first collected from sols ~420-426 of the Perseverance mission. The rover then traversed to the northeast to explore the Hawksbill Gap area before returning to Enchanted Lake for sols ~565-600. This study identifies and characterizes the facies within the Enchanted Lake sedimentary succession, and interprets the paleoenvironment of the outcrop in context with the larger deltaic system

LITHOFACIES, FLOW DIRECTIONS, AND PRELIMINARY DEPOSITIONAL INTERPRETATIONS OF LEDGE-FORMING SANDSTONES AT ALAGNAK, JEZERO CRATER, MARS

International audienceThe Mars 2020 Perseverance rover is exploring a sedimentary deposit interpreted to be theremnants of a delta within Jezero crater, a 45 km diameter Late Noachian-aged crater. During itsexploration of the “lower delta” exposure of the western delta/fan in Jezero crater, Mars (Fig. 1), Perseveranceacquired image and composition data from Alagnak, a ~2 m thick, well-exposed outcrop of clastic sedimentaryrock located at Cape Nukshak (Fig. 1).This outcrop was thoroughly documented from multiple angles at a cm-scale by the Mastcam-Z camerasystem [1] and the Supercam Remote Micro-Imager (RMI) [2] on the Perseverance rover. Dip and strikemeasurements of sedimentary beds were collected from 3D reconstructions of Mastcam-Z stereo-imagescollected using the Planetary Robotics software tools PRoViP and PRo3D [3].In this study, we examine the physical sedimentology and stratigraphic context of the Alagnakoutcrop. The preliminary depositional interpretation of Alagnak is as a prograding, subaqueous fan builtthrough the deposition of many, meter-scale, gravity driven, sediment-rich flows. Flow directions rangedbetween NNE and SW, with principal directions toward SE and E

GEOMORPHOLOGY AND RELATIVE AGES OF CHANNEL BELT DEPOSITS IN JEZERO'S WESTERN DELTA

International audienceIntroduction: The western delta [1] in Jezero crater is composed of a sequence which includes finely layered planar strata, truncated curvilinear strata, and blocky deposits [2], interpreted as prodelta deposits, laterally accreting point-bars formed in meandering channels, and coarse-grained fluvial channel belt deposits, respectively [3-5]. The Mars 2020 Perseverance rover is completing its investigation of the lowest strata exposed within the western delta scarp [6], and will soon embark on a traverse across the delta “top,” during which it will encounter these curvilinear strata and “blocky” channel belt deposits.Here we use orbiter images and digital terrain models to map and characterize the ridge-forming blocky deposits of the western delta, reconstructing the time-order of channel belt deposition within the upper delta. We also re-examine the stratigraphic relationship between the ridges and the underlying curvilinear and planar layered deposits, as well as the largest impact craters on the top surface of the delta

GEOMORPHOLOGY AND RELATIVE AGES OF CHANNEL BELT DEPOSITS IN JEZERO'S WESTERN DELTA

International audienceIntroduction: The western delta [1] in Jezero crater is composed of a sequence which includes finely layered planar strata, truncated curvilinear strata, and blocky deposits [2], interpreted as prodelta deposits, laterally accreting point-bars formed in meandering channels, and coarse-grained fluvial channel belt deposits, respectively [3-5]. The Mars 2020 Perseverance rover is completing its investigation of the lowest strata exposed within the western delta scarp [6], and will soon embark on a traverse across the delta “top,” during which it will encounter these curvilinear strata and “blocky” channel belt deposits.Here we use orbiter images and digital terrain models to map and characterize the ridge-forming blocky deposits of the western delta, reconstructing the time-order of channel belt deposition within the upper delta. We also re-examine the stratigraphic relationship between the ridges and the underlying curvilinear and planar layered deposits, as well as the largest impact craters on the top surface of the delta