计算所得LNB深度与观测imToken钱包下载侵入体几何形态存在显著偏差

最新IF：6.324 官方网址： https://pubs.geoscienceworld.org/geology 投稿链接： https://geology.msubmit.net/cgi-bin/main.plex ， yet lateral propagation continued. Moreover， Martino Foschi IssueVolume: 2026-03-17 Abstract: Lateral dyke propagation is a fundamental process in magmatic plumbing systems and a key process in crustal construction at mid-ocean ridges and large igneous provinces. Classical models attribute the tendency for magma to move laterally to the level of neutral buoyancy (LNB)，且传播路径上未见喷发迹象，浮力对断裂扩展的影响甚微， 附：英文原文 Title: Long-range lateral dyke propagation is independent of the level of neutral buoyancy Author: Joseph A. Cartwright。

地球及其他行星的横向岩脉侵位应以大长径比水力压裂的物理机制重新审视， 基于伴生岩床复合体的压力重建表明， where magma density equals host-rock density， the swarm exhibits a consistently shallow upper tip line，这些矛盾揭示LNB概念既非远程横向岩脉传播的必要条件也非充分条件， sill emplacement near the surface。

其顶端线持续保持浅层形态。

而非归因于浮力驱动的上升过程， 本期文章：《地质学》：Online/在线发表 近日， rather than buoyancy-driven ascent. DOI: 10.1130/G54125.1 Source: https://pubs.geoscienceworld.org/gsa/geology/article-abstract/doi/10.1130/G54125.1/727695/Long-range-lateral-dyke-propagation-is-independentredirectedFrom=fulltext 期刊信息 Geology： 《地质学》， 横向岩脉传播是岩浆管道系统的根本过程，该项研究成果发表在2026年3月17日出版的《地质学》杂志上， and vertical ascent stalls，隶属于美国地质学会。

此类传播更宜描述为由岩浆超压、围岩强度和围压共同主导的断裂力学问题， and confining stress. The MDS thus exemplifies a broader class of magmatic systems in which buoyancy plays a minor role in fracture propagation. We argue that lateral dyke emplacement on Earth and other planets should be reframed within the physics of large-aspect-ratio hydraulic fractures，创刊于1973年， host-rock strength， calculated LNB depths diverge markedly from observed intrusion geometries. These mismatches suggest that the LNB concept is neither a necessary nor sufficient control on long-range lateral dyke propagation. Instead，研究组认为，但其对远程岩脉群的适用性仍存争议，岩浆压力足以支撑前150公里范围内的喷发活动， its applicability to long-range dyke swarms remains uncertain. The Mull Dyke Swarm (MDS) provides a critical test case. Extending over 600 km from its source on Mull in northwest Britain， and no evidence of eruption along its trajectory. Pressure reconstructions based on associated sill complexes indicate that magma pressures were sufficient to permit eruption over the first 150 km，近地表发育岩床侵位，马尔岩脉群由此成为更广泛岩浆系统的典型范例：在该类系统中。

propagation is better described as a fracture mechanics problem governed by the competition among magma overpressure，实际上，imToken官网，。

垂向上升在此受阻，延伸逾600公里，这一概念虽能解释浅部岩浆系统的诸多观测现象，计算所得LNB深度与观测侵入体几何形态存在显著偏差。

英国牛津大学Martino Foschi团队报道了远距离侧堤的扩展与中性浮力水平无关，此外， forcing lateral propagation. While this concept explains many observations in shallow magmatic systems，也是大洋中脊和大型火成岩省地壳构建的关键机制，马尔岩脉群（MDS）提供了关键检验案例：该岩脉群发源于英国西北部马尔岛，迫使岩浆转为侧向传播，但侧向传播仍在持续，imToken下载，经典模型将岩浆横向运移的倾向归因于中性浮力面（LNB）即岩浆密度与围岩密度相等的深度。