Deposits of clastic carbonate-dominated (calciclastic) sedimentary slope systems in the rock record have been identified mostly as linearly-consistent carbonate apron deposits, even though most ancient clastic carbonate slope deposits fit the submarine fan systems better. Calciclastic submarine fans are consequently rarely described and are poorly understood. Subsequently, very little is known especially in mud-dominated calciclastic submarine fan systems. Presented in this study are a sedimentological core and petrographic characterisation of samples from eleven boreholes from the Lower Carboniferous of Bowland Basin (Northwest England) that reveals a >250 m thick calciturbidite complex deposited in a calciclastic submarine fan setting. Seven facies are recognised from core and thin section characterisation and are grouped into three carbonate turbidite sequences. They include: 1) Calciturbidites, comprising mostly of highto low-density, wavy-laminated bioclast-rich facies; 2) low-density densite mudstones which are characterised by planar laminated and unlaminated muddominated facies; and 3) Calcidebrites which are muddy or hyper-concentrated debrisflow deposits occurring as poorly-sorted, chaotic, mud-supported floatstones. These

Phd by thesis

Epistemology: An Anthology

This thesis is concerned with the question “Given a set of knowledge about propositional
variables, what is the ‘best’ way to assign probability values to those variables?”
I present here an approach to this question based upon a philosophical
concept of negation and its role in perception. This concept is discussed in detail
before a mathematical analysis of it is presented, in the form of structures in
propositional logic which, it is claimed, embody the principles of the underlying
philosophy. There follows the definition and mathematical characterisation of an
inference process which utilises these logical structures and also adheres closely
to the principles of Maximum Entropy. The properties of this inference process
are analysed and discussed.
Another inference process is then described based upon a modified version of
the philosophical principles defined earlier. A class of graphs is found which are
intimately connected with this inference process, and two attempts at characterising
this class are presented.
6

/pdf/a-non-classical-approach-to-maximum-entropy-in-uncertain-3nxtbnwsqo.pdf

Michael R. Thomas

Papers

A non-classical approach to maximum entropy in uncertain reasoning