#Lycus Sulci

[nedoliveira1]

Monte Olimpo em Marte já foi cercado por água

Um novo estudo sugere que o Olympus Mons de Marte, o vulcão mais alto do sistema solar, já foi cercado por um oceano marciano que moldou a superfície do planeta.

Um novo estudo sugere que o Monte Olimpo de Marte, o vulcão mais alto do Sistema Solar, já foi banhado por um oceano marciano que desempenhou um papel importante nas marcas de referência na superfície do planeta. O Monte Olimpo é uma montanha colossal que se eleva a cerca de 22 quilômetros acima da planície marciana, quase três vezes a altura do Monte Everest na Terra. O vulcão tem um diâmetro…

[beautifulmars]

HiPOD 4 May 2023: Ridges in Lycus Sulci

This image shows a group of curved ridges in an area called Lycus Sulci, which is located near the Olympus Mons volcano. Much of the rocks in this area have been subjected to erosion (e.g., scouring and removal) by the wind, so that the surface we see today was originally buried deep underground.

Ridges such like these typically form underground through diagenesis, a process where water flows underground and minerals start to form from chemicals within the groundwater. These minerals are typically most abundant in places such as cracks, where the water can easily flow and minerals have room to grow. The mineral-filled cracks are more difficult to erode than the surrounding rocks and thus can form ridges such like these when the weaker surrounding rocks are eroded away.

ID: ESP_077982_1920 date: 16 March 2023 altitude: 279 km

NASA/JPL-Caltech/UArizona

[spacenutspod]

While the surface of Mars looks relatively unchanging now, it wasn’t always so. The tallest mountain in the Solar System is Olympus Mons, a giant shield volcano on Mars that reaches 21.9 km (13.6 miles) high, 2.5 times higher than Mount Everest here on Earth. Ancient lava flows surround the volcanic caldera, evidence of an active time. New images from ESA’s Mars Express show how these lava flows created extremely sharp cliffs, as high as 7 km (4.3 miles) in some areas, which suddenly collapsed in mind-boggling landslides. One of these landslides occurred several 100 million years ago when a chunk of the volcano broke off and spread across the surrounding plains. If we could look back in time and see as it happened, it was certainly a very dramatic and turbulent epoch on Mars. The images, from Mars Express’ High Resolution Stereo Camera (HRSC), show a crumpled feature named Lycus Sulci, on the edges of the aureole; the volcano itself is located out of frame to the bottom left in the image above — (south-east), many hundreds of km away, but visible in the images below. Combining the new images with data with topographical data from NASA’s Mars Orbiter Laser Altimeter helps tell the ancient story of how Olympus Mons’s lower flanks catastrophically collapsed several 100 million years ago. ESA scientists say that large amounts of lava once flowed down the volcano, triggering landslides that tumbled down its flanks to meet bedrock – in this case, bedrock containing ice and water. This image of shows the wrinkled surroundings of Olympus Mons and a feature named Lycus Sulci, on the raised aureole surrounding the volcano. Credit: NASA/MGS/MOLA Science Team The steaming hot lava caused the ice to melt and become unstable; as a result, the rocky rim of Olympus Mons broke off and partially slid away. This collapse came in the form of huge rockfalls and landslides, which slipped downwards and spread widely across the surrounding plains. As the landslides traveled across the landscape, they crumpled and pulled apart, created a wrinkly-looking surface. Later, fierce Martian winds whipped across the hardened lava flows and sculpted them into the softened wrinkles we see today in Lycus Sulci. Olympus Mons, captured by the ESA’s Mars Express mission from orbit. Credit: ESA/DLR/FUBerlin/AndreaLuck Scientists also see these features on Earth, although not as gigantic and widespread as on Mars. Comparable but smaller landslides can be seen around the volcanic islands of Hawaii and the Canary Islands, which have seen large rockfalls in the past. Mars Express has been sending us dramatic images of Mars since 2003. In addition to the images, it also maps minerals, identifies the composition and circulation of its tenuous atmosphere, and explores how various phenomena interact in the Martian environment. Source: ESA The post Over 100 Million Years Ago, Olympus Mons Had a Massive Landslide appeared first on Universe Today.

[gaetaniu]

Le frane ai piedi dell'Olympus Mons

Questa immagine di Mars Express dell’ESA mostra i dintorni rugosi dell’Olympus Mons, il più grande vulcano non solo di Marte ma del Sistema Solare. Questa caratteristica, creata da precedenti frane e cadute di roccia provocate dalla lava, prende il nome di Lycus Sulci. Questa immagine comprende i dati raccolti dalla High Resolution Stereo Camera (HRSC) di Mars Express il 18 gennaio 2023. È stata…

[michel05132]

Crêtes de Lycus Sulci

Cette image montre un groupe de crêtes incurvées dans une zone appelée Lycus Sulci, située près du volcan Olympus Mons. Une grande partie des roches de cette zone ont été soumises à l'érosion (par exemple, affouillement et enlèvement) par le vent, de sorte que la surface que nous voyons aujourd'hui était à l'origine enfouie profondément sous terre.

De telles crêtes se forment généralement sous terre par diagenèse, un processus dans lequel l'eau s'écoule sous terre et les minéraux commencent à se former à partir de produits chimiques dans les eaux souterraines. Ces minéraux sont généralement plus abondants dans des endroits tels que les fissures, où l'eau peut facilement s'écouler et où les minéraux ont de la place pour se développer. Les fissures remplies de minéraux sont plus difficiles à éroder que les roches environnantes et peuvent donc former des crêtes comme celles-ci lorsque les roches environnantes plus faibles sont érodées.

Écrit par : Chris Okubo (4 mai 2023) NASA/JPL/UArizona

[spaceintruderdetector]

Lycus Sulci region, Mars 2003

[admiral70]

PIA22307: Lycus Sulci https://ift.tt/2Gi4yzM

[astro-analytics]

1

http://astro-analytics.net

1. Олимп - вторая по высоте гора Солнечной системы после пика Реясильвия на Весте, его высота 21,2 км от основания. На фото рассвет на горе Олимп в утреннем тумане на плато Фарсида. Вулкан Олимп виден из области Lycus Sulci.

2. Рассвет на горе Элизий. Слева - вулкан Купол Гекаты, справа - Купол Альбор.

3. Кратер Гейла его диаметр - около 154 км.Закат над областью Киммерия. Вид на кратер Гейла с Эолова плоскогорья.

4. Горы Фарсиды. Горы Арсия, Павлина и Аскрийская. Вид с юго-запада на северо-восток. Влево - кратер Библис (слева) и кратер Улисс.

5. Разлом Ius Chasma (долина Маринер). Ius Chasma (западная часть долины Маринер) с пылью и туманом.

6. Северный полюс и Северный разлом и кратер Королева.

7. Кратер Патера Орк (Orcus Patera) на закате. Кратер непривычной овальной формы вероятно образован объектом, который слегка задел Марс. Размер кратера примерно 380 км в длину и 140 км в ширину.

8. Кратер Маральди на обледенелом Марсе.

9. 470-километровый марсианский ударный кратер Скиапарелли, расположенный вблизи экватора планеты. Свет низко стоящего солнца не достигает западного края.

10. Купол Фарсиды. Купол Фарсиды во время песчаной бури. Вулканы Фарсиды возвышаются над зоной песчаной бури.

[spaceexp]

Lycus Sulci

Source: ASUMarsSpaceFlight

[gaetaniu]

Creste in Lycus Sulci

Questa immagine mostra un gruppo di creste ricurve in un’area chiamata Lycus Sulci, che si trova vicino al vulcano Olympus Mons. Gran parte delle rocce presenti in quest’area sono state sottoposte all’erosione (ad esempio, al dilavamento e alla rimozione) da parte del vento, per cui la superficie che vediamo oggi era originariamente sepolta in profondità nel sottosuolo. Le creste come queste si…

[beautifulmars]

HiPOD 6 April 2020: Yardangs South of Lycus Sulci

  Yardangs are composed of sand grains that have clumped together and have become more resistant to erosion than their surrounding materials. They also serve as a useful indicator of the prevailing wind direction. ID: ESP_055628_1895 date: 9 June 2018 altitude: 276 km NASA/JPL/UArizona

[gaetaniu]

Creste e depressioni a Lycus Sulci

Creste e depressioni a Lycus Sulci

Questa immagine cattura diversi processi geologici influenti che hanno modellato il paesaggio di Lycus Sulci. L’osservazione copre un’area di circa 7,5 per 5,4 chilometri nel Lycus Sulci, situato appena a nord-ovest di Olympus Mons nella regione di Tharsis di Marte. “Sulci” è un termine latino che significa “solco” o “scanalatura”. In questo caso, Lycus Sulci è una regione composta da una serie…

[michel05132]

(via HiRISE |  Crêtes au sud de Lycus Sulci (ESP_053861_1920))

L'objectif de cette observation est d'examiner un champ de crêtes qui a l'air assez vif. (281 km au-dessus de la surface. )

  Nasa / JPL / Université D'Arizona

[spaceexp]

Lycus Sulci slope streaks

Source: ASUMarsSpaceFlight

[spaceexp]

Slope streaks in Lycus Sulci

Source: ASUMarsSpaceFlight