Definición de micro regiones para el desarrollo argentino

Se elaboró una interpretación integral del proceso de configuración socioterritorial argentino. Tras los estudios pertinentes, se logró cartografiar aspectos estructurales del mismo, elaborando como síntesis un mapa de Microregiones de Desarrollo

EXPLORING THE JEZERO DELTA FRONT: OVERVIEW OF RESULTS FROM THE MARS 2020 PERSEVERANCE ROVER'S SECOND SCIENCE CAMPAIGN

International audienceThe Perseverance rover landed in Jezero crater on February 18, 2021, with the mission goals to explore the geology, astrobiological potential, and modern environment of the crater floor and delta, and to collect and cache well-documented samples for Mars Sample Return. After completion of the “Crater Floor” science campaign [1], the rover conducted a rapid traverse (sols 379-414) to the Three Forks region of the crater floor adjacent to the delta front. From here, Perseverance’s second “Delta Front” science campaign (DFC) began on Sol 415, April 20, 2022. The DFC has explored two lobes of the delta front, the neighboring crater floor, and their contact zone, focusing on the lowest geologic exposures composing the Jezero delta (largely mapped within the delta “thin layered unit” [2]). As of January 1, 2023, Perseverance has covered 14325 km of traverse distance and collected 15 rock sample cores, 2 regolith samples, 1 atmospheric sample, and 3 witness tubes, employing a sample pair strategy where each unique sample is paired with a companion sample core from the same location, to enable the construction of two different caches [3]. After sample depot construction at Three Forks, the DFC will conclude upon re-ascent of the delta front, and the next “Delta Top” science campaign will start

EXPLORING THE JEZERO DELTA FRONT: OVERVIEW OF RESULTS FROM THE MARS 2020 PERSEVERANCE ROVER'S SECOND SCIENCE CAMPAIGN

International audienceThe Perseverance rover landed in Jezero crater on February 18, 2021, with the mission goals to explore the geology, astrobiological potential, and modern environment of the crater floor and delta, and to collect and cache well-documented samples for Mars Sample Return. After completion of the “Crater Floor” science campaign [1], the rover conducted a rapid traverse (sols 379-414) to the Three Forks region of the crater floor adjacent to the delta front. From here, Perseverance’s second “Delta Front” science campaign (DFC) began on Sol 415, April 20, 2022. The DFC has explored two lobes of the delta front, the neighboring crater floor, and their contact zone, focusing on the lowest geologic exposures composing the Jezero delta (largely mapped within the delta “thin layered unit” [2]). As of January 1, 2023, Perseverance has covered 14325 km of traverse distance and collected 15 rock sample cores, 2 regolith samples, 1 atmospheric sample, and 3 witness tubes, employing a sample pair strategy where each unique sample is paired with a companion sample core from the same location, to enable the construction of two different caches [3]. After sample depot construction at Three Forks, the DFC will conclude upon re-ascent of the delta front, and the next “Delta Top” science campaign will start

Overview of Perseverance’s Upper Fan Campaign

International audienceThe Mars 2020 Perseverance rover’s mission objective is to collect diverse suites of samples for return to Earth via Mars Sample Return and characterize their geologic and environmental context. Jezero crater was selected as the landing site for Perseverance partially due to the opportunity to explore the western fan deposits, which include water-lain sediments from a diverse ancient watershed that have been lithified and exposed by wind. The Upper Fan Campaign, described here, is the third campaign of the mission; it follows the crater floor campaign and the delta front campaign that explored ~40 m of sedimentary deposits at the base of two lobes of the fan. The Upper Fan Campaign includes the rover traverse from the top of the delta front campaign to the margin unit lining the inner crater rim.Prior to landing, two major geologic units were identified on the Upper Fan: the truncated curvilinear unit and the blocky unit. Our goals are to characterize the depositional context and major lithologies present in each unit and acquire samples. At time of writing, we have collected two samples and are planning 1-2 more sample acquisitions in the Upper Fan.The Melyn sample is a fine-grained sandstone from the light toned bands of the truncated curvilinear unit at Tenby, part of the Skrinkle Haven member of the Tenby formation. The sandstone lacks internal structure and decimeter-thick layers have steep (>20°) dip angles. It is interpreted to have formed in subaqueous downslope avalanches, likely on a downstream bar or delta foreset. Melyn contains detrital primary and altered silicates, minor sulfates, and Mg, Fe carbonate grains, coatings, and possible cement.The Otis_Peak sample is a cross-stratified conglomerate interpreted as part of a higher-energy delta plain braided river deposit in the Carew Castle member of the Tenby formation, overlying the Skrinkle Haven member. Proximity science and remote sensing indicate Otis_Peak contains coarse (up to 4 mm) detrital primary and altered silicates with sulfates and Fe, Mg carbonates.Perseverance is characterizing the most commonly observed boulder lithologies in the blocky unit, including boulders with dominant olivine and pyroxene spectral signatures. We plan to collect 1-2 more samples in the campaign, including a lithology representative of the latest phase of delta deposition

OVERVIEW OF THE MARS 2020 MISSION PERSEVERANCE ROVER THIRD SCIENCE CAMPAIGN: EXPLORING JEZERO CRATER’S UPPER FAN

International audienceThe objective of the Mars 2020 mission is to characterize the geologic history and astrobiological potential of Jezero crater, as well as to collect and document a suite of samples for potential future return to Earth [1]. Jezero crater was selected as the landing site for the Perseverance rover in part due to the presence of the exceptionally well-preserved “western fan” (Fig. 1). This fan was interpreted from orbiter images to be a river delta, formed in the late Noachian to early Hesperian in a lake that was once present inside the crater [2-5]. The Upper Fan Campaign is the third campaign of the Mars 2020 mission. It began in February 2023 (sol 708) with the rover’s arrival at the top of the fan front and ended in September 2023 (~sol 910) when the rover crossed into the Margin unit lining the inner crater rim (Fig. 1)

Overview of Perseverance’s Upper Fan Campaign

International audienceThe Mars 2020 Perseverance rover’s mission objective is to collect diverse suites of samples for return to Earth via Mars Sample Return and characterize their geologic and environmental context. Jezero crater was selected as the landing site for Perseverance partially due to the opportunity to explore the western fan deposits, which include water-lain sediments from a diverse ancient watershed that have been lithified and exposed by wind. The Upper Fan Campaign, described here, is the third campaign of the mission; it follows the crater floor campaign and the delta front campaign that explored ~40 m of sedimentary deposits at the base of two lobes of the fan. The Upper Fan Campaign includes the rover traverse from the top of the delta front campaign to the margin unit lining the inner crater rim.Prior to landing, two major geologic units were identified on the Upper Fan: the truncated curvilinear unit and the blocky unit. Our goals are to characterize the depositional context and major lithologies present in each unit and acquire samples. At time of writing, we have collected two samples and are planning 1-2 more sample acquisitions in the Upper Fan.The Melyn sample is a fine-grained sandstone from the light toned bands of the truncated curvilinear unit at Tenby, part of the Skrinkle Haven member of the Tenby formation. The sandstone lacks internal structure and decimeter-thick layers have steep (>20°) dip angles. It is interpreted to have formed in subaqueous downslope avalanches, likely on a downstream bar or delta foreset. Melyn contains detrital primary and altered silicates, minor sulfates, and Mg, Fe carbonate grains, coatings, and possible cement.The Otis_Peak sample is a cross-stratified conglomerate interpreted as part of a higher-energy delta plain braided river deposit in the Carew Castle member of the Tenby formation, overlying the Skrinkle Haven member. Proximity science and remote sensing indicate Otis_Peak contains coarse (up to 4 mm) detrital primary and altered silicates with sulfates and Fe, Mg carbonates.Perseverance is characterizing the most commonly observed boulder lithologies in the blocky unit, including boulders with dominant olivine and pyroxene spectral signatures. We plan to collect 1-2 more samples in the campaign, including a lithology representative of the latest phase of delta deposition

Overview of Perseverance’s Upper Fan Campaign

International audienceThe Mars 2020 Perseverance rover’s mission objective is to collect diverse suites of samples for return to Earth via Mars Sample Return and characterize their geologic and environmental context. Jezero crater was selected as the landing site for Perseverance partially due to the opportunity to explore the western fan deposits, which include water-lain sediments from a diverse ancient watershed that have been lithified and exposed by wind. The Upper Fan Campaign, described here, is the third campaign of the mission; it follows the crater floor campaign and the delta front campaign that explored ~40 m of sedimentary deposits at the base of two lobes of the fan. The Upper Fan Campaign includes the rover traverse from the top of the delta front campaign to the margin unit lining the inner crater rim.Prior to landing, two major geologic units were identified on the Upper Fan: the truncated curvilinear unit and the blocky unit. Our goals are to characterize the depositional context and major lithologies present in each unit and acquire samples. At time of writing, we have collected two samples and are planning 1-2 more sample acquisitions in the Upper Fan.The Melyn sample is a fine-grained sandstone from the light toned bands of the truncated curvilinear unit at Tenby, part of the Skrinkle Haven member of the Tenby formation. The sandstone lacks internal structure and decimeter-thick layers have steep (>20°) dip angles. It is interpreted to have formed in subaqueous downslope avalanches, likely on a downstream bar or delta foreset. Melyn contains detrital primary and altered silicates, minor sulfates, and Mg, Fe carbonate grains, coatings, and possible cement.The Otis_Peak sample is a cross-stratified conglomerate interpreted as part of a higher-energy delta plain braided river deposit in the Carew Castle member of the Tenby formation, overlying the Skrinkle Haven member. Proximity science and remote sensing indicate Otis_Peak contains coarse (up to 4 mm) detrital primary and altered silicates with sulfates and Fe, Mg carbonates.Perseverance is characterizing the most commonly observed boulder lithologies in the blocky unit, including boulders with dominant olivine and pyroxene spectral signatures. We plan to collect 1-2 more samples in the campaign, including a lithology representative of the latest phase of delta deposition

OVERVIEW OF THE MARS 2020 MISSION PERSEVERANCE ROVER THIRD SCIENCE CAMPAIGN: EXPLORING JEZERO CRATER’S UPPER FAN

International audienceThe objective of the Mars 2020 mission is to characterize the geologic history and astrobiological potential of Jezero crater, as well as to collect and document a suite of samples for potential future return to Earth [1]. Jezero crater was selected as the landing site for the Perseverance rover in part due to the presence of the exceptionally well-preserved “western fan” (Fig. 1). This fan was interpreted from orbiter images to be a river delta, formed in the late Noachian to early Hesperian in a lake that was once present inside the crater [2-5]. The Upper Fan Campaign is the third campaign of the Mars 2020 mission. It began in February 2023 (sol 708) with the rover’s arrival at the top of the fan front and ended in September 2023 (~sol 910) when the rover crossed into the Margin unit lining the inner crater rim (Fig. 1)

OVERVIEW OF THE MARS 2020 MISSION PERSEVERANCE ROVER THIRD SCIENCE CAMPAIGN: EXPLORING JEZERO CRATER’S UPPER FAN

International audienceThe objective of the Mars 2020 mission is to characterize the geologic history and astrobiological potential of Jezero crater, as well as to collect and document a suite of samples for potential future return to Earth [1]. Jezero crater was selected as the landing site for the Perseverance rover in part due to the presence of the exceptionally well-preserved “western fan” (Fig. 1). This fan was interpreted from orbiter images to be a river delta, formed in the late Noachian to early Hesperian in a lake that was once present inside the crater [2-5]. The Upper Fan Campaign is the third campaign of the Mars 2020 mission. It began in February 2023 (sol 708) with the rover’s arrival at the top of the fan front and ended in September 2023 (~sol 910) when the rover crossed into the Margin unit lining the inner crater rim (Fig. 1)

Overview of Perseverance’s Upper Fan Campaign

International audienceThe Mars 2020 Perseverance rover’s mission objective is to collect diverse suites of samples for return to Earth via Mars Sample Return and characterize their geologic and environmental context. Jezero crater was selected as the landing site for Perseverance partially due to the opportunity to explore the western fan deposits, which include water-lain sediments from a diverse ancient watershed that have been lithified and exposed by wind. The Upper Fan Campaign, described here, is the third campaign of the mission; it follows the crater floor campaign and the delta front campaign that explored ~40 m of sedimentary deposits at the base of two lobes of the fan. The Upper Fan Campaign includes the rover traverse from the top of the delta front campaign to the margin unit lining the inner crater rim.Prior to landing, two major geologic units were identified on the Upper Fan: the truncated curvilinear unit and the blocky unit. Our goals are to characterize the depositional context and major lithologies present in each unit and acquire samples. At time of writing, we have collected two samples and are planning 1-2 more sample acquisitions in the Upper Fan.The Melyn sample is a fine-grained sandstone from the light toned bands of the truncated curvilinear unit at Tenby, part of the Skrinkle Haven member of the Tenby formation. The sandstone lacks internal structure and decimeter-thick layers have steep (>20°) dip angles. It is interpreted to have formed in subaqueous downslope avalanches, likely on a downstream bar or delta foreset. Melyn contains detrital primary and altered silicates, minor sulfates, and Mg, Fe carbonate grains, coatings, and possible cement.The Otis_Peak sample is a cross-stratified conglomerate interpreted as part of a higher-energy delta plain braided river deposit in the Carew Castle member of the Tenby formation, overlying the Skrinkle Haven member. Proximity science and remote sensing indicate Otis_Peak contains coarse (up to 4 mm) detrital primary and altered silicates with sulfates and Fe, Mg carbonates.Perseverance is characterizing the most commonly observed boulder lithologies in the blocky unit, including boulders with dominant olivine and pyroxene spectral signatures. We plan to collect 1-2 more samples in the campaign, including a lithology representative of the latest phase of delta deposition