Discovery of a flank caldera and very young glacial activity at Hecates Tholus, Mars

@article{Hauber2005DiscoveryOA,
  title={Discovery of a flank caldera and very young glacial activity at Hecates Tholus, Mars},
  author={Ernst Hauber and Stephan van Gasselt and Boris A. Ivanov and Stephanie C. Werner and James W. Head and Gerhard Neukum and Ralf Jaumann and Ronald Greeley and Karl Mitchell and Peter Műller},
  journal={Nature},
  year={2005},
  volume={434},
  pages={356-361}
}
The majority of volcanic products on Mars are thought to be mafic and effusive. Explosive eruptions of basic to ultrabasic chemistry are expected to be common, but evidence for them is rare and mostly confined to very old surface features. Here we present new image and topographic data from the High Resolution Stereo Camera that reveal previously unknown traces of an explosive eruption at 30° N and 149° E on the northwestern flank of the shield volcano Hecates Tholus. The eruption created a… 

Recent and episodic volcanic and glacial activity on Mars revealed by the High Resolution Stereo Camera

TLDR
It is shown that calderas on five major volcanoes on Mars have undergone repeated activation and resurfacing during the last 20 per cent of martian history, with phases of activity as young as two million years, suggesting that the volcanoes are potentially still active today.

Long-Term Evolution of the Martian Crust-Mantle System

Lacking plate tectonics and crustal recycling, the long-term evolution of the crust-mantle system of Mars is driven by mantle convection, partial melting, and silicate differentiation. Volcanic

Supraglacial and proglacial valleys on Amazonian Mars

Geomorphological map of the lower NW flank of the Hecates Tholus volcano, Mars (scale 1:100,000)

Hecates Tholus (centered at 32.1°N 150.2°E), is a shield volcano in the Elysium volcanic province, located in the Martian lowlands in the northern hemisphere. Images of this volcano acquired by the

An extended period of episodic northern mid-latitude glaciation on Mars during the Middle to Late Amazonian: Implications for long- term obliquity history

Mars is the only planet other than Earth in the Solar System that has a preserved nonpolar geological record of glaciation on its surface. Nonpolar ice deposits on Mars have been linked to variations
...

References

SHOWING 1-10 OF 37 REFERENCES

Explosive volcanism on Hecates Tholus, Mars - Investigation of eruption conditions

Evidence is presented supporting the identification of a discrete, well-preserved air fall deposit generated by explosive volcanism on Mars. The deposit is located immediately to the west of the

Recent and episodic volcanic and glacial activity on Mars revealed by the High Resolution Stereo Camera

TLDR
It is shown that calderas on five major volcanoes on Mars have undergone repeated activation and resurfacing during the last 20 per cent of martian history, with phases of activity as young as two million years, suggesting that the volcanoes are potentially still active today.

Absence of silicic volcanism on Mars: Implications for crustal composition and volatile abundance

On Earth, eruptions of silicic magmas with volumes of 1–100 km3 are generally associated with stratovolcanoes or composite cones, whereas larger (100–1000 km3) ignimbrite deposits are erupted from

Volcanic geology of Tyrrhena Patera, Mars

Tyrrhena Patera is a large, low-relief volcano located in the southern cratered highlands of Mars on a proposed ring fracture of the Hellas basin. The volcano is composed of four or possibly five

Recent ice ages on Mars

TLDR
Evidence is shown that dusty, water-ice-rich mantling deposits on Mars formed during a geologically recent ice age that occurred from about 2.1 to 0.4 Myr ago, a key pacemaker of ice ages on the Earth.

Mars: review and analysis of volcanic eruption theory and relationships to observed landforms.

We present a theoretical treatment of the ascent, emplacement, and eruption of magma on Mars. Because of the lower gravity, fluid convective motions and crystal settling processes driven by positive

Recent ice-rich deposits formed at high latitudes on Mars by sublimation of unstable equatorial ice during low obliquity

TLDR
Using the ice accumulation rates estimated from global climate model simulations, it is shown that, over the past ten million years, large variations of Mars' obliquity have allowed the formation of such metres-thick, sedimentary layered deposits in high latitude and polar regions.

Cold-based Mountain Glaciers on Mars: Western Arsia Mons Fan-shaped Deposits

Surface environmental conditions on Mars are currently extremely cold and hyperarid, most equivalent to polar deserts on Earth. Coupling newly acquired Mars data with fieldbased observations

Cratering Chronology and the Evolution of Mars

Results by Neukum et al. (2001) and Ivanov (2001) are combined with crater counts to estimate ages of Martian surfaces. These results are combined with studies of Martian meteorites (Nyquist et al.,

The distribution and behavior of Martian ground ice during past and present epochs

Mars undergoes significant oscillations in its orbit, which will have a pronounced effect on its climate and, in particular, on the behavior of subsurface water ice. We explore and map the behavior