In the southern Appalachian mountains Rhododendron maximum L. (R.m.) is the dominant subcanopy evergreen species. Approximately 30 million hectares of the southern Appalachian mountains are occupied by R.m. This subcanopy evergreen shrub forms extensive thickets, near streams and on north slopes, reaching a height of 3-6 m. On north-facing slopes these thickets form a mosaic of -40% cover. Ther...

The Clarke River Fault in northeast Queensland records an early Paleozoic history of subduction, accretion and continental suturing. Samples mafic–ultramafic rocks collected proximal to the record oceanic geochemical affinities comprise alteration assemblages consistent with ophiolitic origin. ca 456 Ma Falls Creek Tonalite a continental-arc signature was formed response long-lived subduction b...

This paper is a complement to the Tectonometamorphic Map of the Canadian Shield, and contains a brief description of the metamorphic history of Proterozoic orogenic belts and rock sequences in the Canadian Shield in Ontario, with a focus on rocks of the Southern and Grenville provinces. Metamorphism in the Southern Province has generally been attributed to the Penokean orogeny (~1879–1820 Ma), ...

In an Appalachian Set Theory Workshop [3], Gitik presented some of the details of a simplified version of the poset from his original paper. The discussion there motivates the definition of the forcing by modifying a poset which requires a stronger large cardinal assumption which is sometimes called the long extender forcing. However, the discussion recorded in the Appalachian Set Theory (AST) ...

BACKGROUND People in Appalachia experience some of the worst oral health in the United States. To develop effective intervention and prevention strategies in Appalachia, we must understand the complex relationships among the contributing factors and how they affect the etiology of oral diseases. To date, no such comprehensive analysis has been conducted. This report summarizes the characteristi...

Microdiamonds from the Akluilâk minette dykes (Nunavut, Canada) are similar to diamonds formed in subducted metamorphic rocks. High concentrations of unaggregated nitrogen and positive delta(15)N suggest that the microdiamonds formed within rocks subducted to ultrahigh pressures before being sampled by the minette magma 1.8 billion years ago. This ultrahigh pressure metamorphism in North Americ...

Abstract Reported here are geological, geophysical, mineralogical, and geochemical data on a previously unknown trachyte-hosted rare earth element (REE)-Nb-Zr occurrence at Pennington Mountain in northern Maine, USA. This was newly discovered by regional multiparameter, airborne radiometric survey that revealed anomalously high equivalent Th (eTh) U (eU), confirmed detailed ground portable X-Ra...