focuses melt, occasionally resulting in sufficiently high melt pressure to drive dikes upward and feed eruptive episodes

Larger Monogenetic basaltic volcanic fields occur in extensional (e.g., Basin and Range Province of North Earth and Planetary Science Letterspredictability may be a fundamental property of tectonically controlled basaltic fields, where melt accumulation and ascent are controlled by tectonic strain rate. This behavior contrasts with magmatically controlled fields where magma flux is sufficiently high to overwhelm local tectonic strain, eruptions are primarily caused by magmatic processes that build pressure in reservoirs, and the systems are more likely to be volume-predictable. © 2007 Elsevier B.V. All rights reserved. Keywords: basaltic field; lithospheric mantle; dike; effusion rate; time-predictable; volume-predictable 1. Introductionevents, and therefore are followed by longer repose intervals source volumes result in larger eruptive volumes and wider dikes that relieve relatively more strain in the crust than smaller volum