Results 111 to 120 of about 10,615 (268)

New Insights into Lava Tube Formation: An Asymmetrical and Deep Case Observed by Yutu-2 Radar at Lunar Farside

The Astrophysical Journal
This article reports a potential lava tube observed at ∼130 m depth of the lunar farside by Lunar Penetrating Radar data. However, a possible scenario with a kind of dry and low-density materials connected with a basaltic boulder or lava flow cannot be ...
Haoqiu Zhou, Xuan Feng, Zejun Dong, Chunyu Ding, Ling Zhang, Cai Liu, Wenjing Liang   +6 more
doaj   +1 more source

Aiyansh lava flow, British Columbia

, 1969
The Aiyansh alkali basalt lava flow is one of the youngest volcanic features of British Columbia, about 220 years old. It issued from a vent area (55° 7′ N, 128° 54′ W) in a narrow tributary valley of the Tseax River, flowed 14 miles (22.5 km) to the ...
A. Sutherland Brown
core   +1 more source

Trace Element Emissions Vary With Lava Flow Age and Thermal Evolution During the Fagradalsfjall 2021–2023 Eruptions, Iceland

Geochemistry, Geophysics, Geosystems
Basaltic fissure eruptions emit volatile and environmentally reactive gases and particulate matter (PM) into the lower troposphere (e.g., SO2, HCl, and HF in the gas phase; Se, As, Pb as complexes in the PM phase).
L. Wainman, E. Ilyinskaya, M. Pfeffer, C. Mandon, E. Bali, B. A. Edwards, B. I. Kleine‐Marshall, S. R. Gudjonsdottir, A. Cotterill, S. W. Scott, P. Wieser, A. Stefánsson, E. J. Nicholson, J. Sepulveda‐Araya, S. J. Hammond, B. E. Kunz, F. Jenner, J. R. Gunnarsson, A. Aiuppa, M. Burton, T. A. Mather   +20 more
doaj   +1 more source

SPH Simulation of Molten Metal Flow Modeling Lava Flow Phenomena with Solidification

Dynamics
Characteristic dynamics in lava flows, such as the formation processes of lava levees, toe-like tips, and overlapped structures, were reproduced successfully through numerical simulation using the smoothed particle hydrodynamics (SPH) method. Since these
Shingo Tomita, Joe Yoshikawa, Makoto Sugimoto, Hisaya Komen, Masaya Shigeta   +4 more
doaj   +1 more source

Systematic Approach for Carbonate and Volcanic Facies Classification Based on Textural and Structural Variations Observed in Brazilian Pre‐Salt Acoustic Image Logs

Journal of Petroleum Geology, Volume 49, Issue 3, Page 869-906, July 2026.
ABSTRACT Facies characterization in carbonate reservoirs remains challenging due to their pronounced textural and structural heterogeneity. Variations in grain packing, cementation, and diagenetic overprints produce contrasting acoustic responses in borehole image logs, often limiting the reproducibility of facies interpretation.
Lenita de Souza Fioriti, Rodrigo César Teixeira de Gouvêa, Cleyton de Carvalho Carneiro   +2 more
wiley   +1 more source

Morphometric analysis of lava tubes. [PDF]

openLava tubes (also known as pyroducts) are objects of great interest not only for their role in the formation of lava flow fields on Earth but also because these geological features could have important implications for the emplacement of lava terrains
MARRAFFA, ALESSANDRO
core  

The Addition of a 3D Balanced Steady‐State Free Precession Pulse Sequence Improves Magnetic Resonance Imaging Identification of Certain Canine Cranial Nerves

Veterinary Radiology &Ultrasound, Volume 67, Issue 4, July 2026.
ABSTRACT In people, magnetic resonance imaging (MRI) with high‐resolution, high T2‐weighted (T2w) contrast‐balanced steady‐state free precession (b‐SSFP) pulse sequences and 3D fast spoiled gradient‐echo (FSPGR) pulse sequences can improve visualization of cranial nerves (CNs) and associated osseous foramina. This prospective, observational study aimed
Rachel Durrwachter, Wilfried Mai, Alessia Cordella, Jennifer Reetz, Matthew Paek   +4 more
wiley   +1 more source

STUDI PENDAHULUAN GEOLOGI GUA LAWA DI PURBALINGGA, JAWA TENGAH

Dinamika Rekayasa, 2007
Lawa Cave in Purbalingga Regency is a special type of cave as it formed not at calcareous rocks like at the usual cave. It is formed by lava flow processes. So, it is made of an igneous rock and it has an andesit basaltic rock type.
Asmoro Widagdo, Rachmad Setijadi
doaj  

Lithosphere‐Asthenosphere Interactions Across the Indo‐Burma Subduction Zone From Sp Receiver Functions

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract The Cenozoic convergence between the Indian and Asian plates has driven large‐scale mantle convection that interacts with both plates. Understanding this convergence benefits from clear imaging of the lithosphere‐asthenosphere boundary (LAB).
Yiming Bai, Xiaohui Yuan, Frederik Tilmann, Bernd Schurr, Yinshuang Ai, Yumei He, Shengji Wei, Guangbing Hou, Myo Thant, Kyaing Sein, Oo Than, Mingming Jiang, Ping Tong   +12 more
wiley   +1 more source

Lava flow field development and lava tube formation during the 1858–1861 eruption of Vesuvius (Italy), unravelled by historical documentation, lidar data and 3D mapping

Somma-Vesuvius is well known for its powerful Plinian explosive eruptions, however during the last eruptive cycle (1631-1944), persistent activity took place on the stratovolcano as mild and violent Strombolian, and effusive eruptions, forming more than ...
Petrosino, Paola, Repola, Leopoldo, Frondini, Francesco, Esposito, Lorenzo, Morra, Vincenzo, Morgavi, Daniele, Lemaire, Thomas, Di Martire, Diego, Calvari, Sonia   +8 more
core   +1 more source