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The new paradigm of sequence stratigraphy attempts to discern the
migration of facies resulting from changes in eustatic, tectonic
and sedimentary regimes in order to anticipate the locus and type
of sediment deposition. It is rapidly becoming an indispensable
tool for the prediction of facies in exploration and production
geology and for discerning internal stratal architecture through
high-resolution studies of oil fields for enhanced hydrocarbon
exploitation. The discipline is in a state of rapid expansion. New
case studies of its application are vital to an appreciation of the
full potential of the methodology. The variety of studies published
here collectively exemplify the response of the depositional
systems to various governing factors that create or destroy
accommodation space, modify sediment flux, and/or alter coastal and
offshore productivity in a number of depositional environments and
temporal scales. The volume contains articles that emphasize
sequence biostratigraphy, sequence ecostratigraphy, the
peculiarities of reefal and non-reefal carbonate platforms,
computer simulation of basin sediment fill, global rates of coal
deposition in terms of eustatic changes and the behavior of mixed
siliclastic-carbonate systems. The papers also cover documentation
of sequences in intervals ranging from the Paleozoic to Miocene.
One article identifies a previously ignored, but potentially
significant, mechanism of eustatic change during non-glacial
periods and the possible anthropogenic component of sea-level rise
during the twentieth century. Finally, a more speculative article
presents the case for an extraterrestrial connection as a source
for third-order eustatic cycles. The casestudies go a long way to
further document the variations on the basic themes of sequence
stratigraphy and enhance its value as a predictive tool in
exploration and production geology.
Anthropogenic transformation of the coastal zone continues at a
steady pace, especially in the developing maritime countries, where
coastal resources are often crucial to national economies. However,
exploitation of these resources is often indiscriminate, ill
planned, or carried out without adequate scientific knowledge. This
leads to rapid resource depletion, and often irreversible
environmental degradation. The 1992 Rio de Janeiro UN Conference on
Environment and Development recognized the expediency of an
integrated and sustainable use of all coastal resources, functions
and services grounded on sound scientific data. The present volume
is based on the 1994 international workshop Integrated Coastal Zone
Management, and brings together contributions by leading
specialists both on basic concepts and on applications of coastal
management. The work is divided into six parts, dealing with the
conceptual framework of ICZM; regional and global aspects of
coastal management; environmental assessment in ICZM; capacity
building and technology transfer; monitoring and environmental
analysis; and case studies and status of ICZM plans. The book also
incorporates an interactive ICZM planning module, COSMO, which can
be of use in designing a management plan for a coast. Attention is
also given to long-term environmental effects of present-day
actions. It is hoped that COSMO will prove an additional learning
tool for ICZM practitioners and enhance the value of the book. This
work is intended to give a broad coverage of conceptual and
technical aspects of ICZM, and will be of use to operational
executives as well as students of ICZM, environmental economists,
policy-makers and senior managers in the international development
agencies and governmental and non-governmental organizations. It
can be recommended as a textbook and as a reference work.
Greenhouse-induced climate warming increasingly appears to be a
reality, and the warming climate will be accompanied by an
accelerated sea level rise - as much as 60-100 cm over the next
century. What is commonly absent in the discussion of rising sea
level, however, is the role played by the subsidence of low-lying
coastal areas, which can have a far greater local effect than the
eustatic rise of the sea. The combined sea-level rise and land
subsidence will almost certainly make the greatest impact on
coastal societies in the densely populated regions of southern
Asia, but its effects will be felt globally. This volume explores
the concepts of sea-level rise and coastal subsidence, both natural
and anthropogenically accelerated, in the form of a series of case
studies in such diverse locations as Bangkok, Bangladesh, Venice,
and the Niger and Mississippi deltas, as well as a discussion of
the economic, engineering and policy responses that must be
considered if the effects of local sea-level rise are to be
mitigated.
Sequence stratigraphy has advanced considerably since the early
applications of the concepts on seismic data. It attempts to
discern the migration of facies re sulting from changes in a
combination of factors such as, sea level, tectonics, climate and
sediment flux, and integrates it with a meaningful
chronostratigraphy. The stratigraphic record is envisioned as a
framework of repetitive packages of genetically-related strata,
formed in response to the shifting base level, in which the locus
of deposition of various sediment types may be anticipated. This
attribute is rapidly promoting sequence stratigraphy as an
indispensable tool for prediction of facies in exploration and
production geology. In hydrocarbon exploration the application of
sequence stratigraphy has ranged from anticipating reservoir- and
source-rock distribution to predicting carbonate diagenesis,
porosity and permeability. The capability to anticipate vertical
and lateral distribution of facies and reservoir sands in the
basinal, shoreface, incised valley-fill and regressive settings
alone has been a great asset for exploration. In frontier areas,
where data are often limited to seismic lines,
sequence-stratigraphic methodology has helped determine the timing
and of types of unconformities and anticipate transgressive- and
regressive-prone intervals. In production it is aiding in field
development by providing improved source and seal predictions for
secondary oil recovery. A recognition of stratigraphic causes of
poor recovery through improved understanding of internal stratal
architecture can lead to new well recompletions and enhanced
exploitation in existing fields. The sequence-stratigraphic
discipline is in a state of rapid expansion."
Greenhouse-induced climate warming increasingly appears to be a
reality, and the warming climate will be accompanied by an
accelerated sea level rise - as much as 60-100 cm over the next
century. What is commonly absent in the discussion of rising sea
level, however, is the role played by the subsidence of low-lying
coastal areas, which can have a far greater local effect than the
eustatic rise of the sea. The combined sea-level rise and land
subsidence will almost certainly make the greatest impact on
coastal societies in the densely populated regions of southern
Asia, but its effects will be felt globally. This volume explores
the concepts of sea-level rise and coastal subsidence, both natural
and anthropogenically accelerated, in the form of a series of case
studies in such diverse locations as Bangkok, Bangladesh, Venice,
and the Niger and Mississippi deltas, as well as a discussion of
the economic, engineering and policy responses that must be
considered if the effects of local sea-level rise are to be
mitigated.
Anthropogenic transformation of the coastal zone continues at a
steady pace, especially in the developing maritime countries, where
coastal resources are often crucial to national economies. However,
exploitation of these resources is often indiscriminate, ill
planned, or carried out without adequate scientific knowledge. This
leads to rapid resource depletion, and often irreversible
environmental degradation. The 1992 Rio de Janeiro UN Conference on
Environment and Development recognized the expediency of an
integrated and sustainable use of all coastal resources, functions
and services grounded on sound scientific data. The present volume
is based on the 1994 international workshop Integrated Coastal Zone
Management, and brings together contributions by leading
specialists both on basic concepts and on applications of coastal
management. The work is divided into six parts, dealing with the
conceptual framework of ICZM; regional and global aspects of
coastal management; environmental assessment in ICZM; capacity
building and technology transfer; monitoring and environmental
analysis; and case studies and status of ICZM plans. The book also
incorporates an interactive ICZM planning module, COSMO, which can
be of use in designing a management plan for a coast. Attention is
also given to long-term environmental effects of present-day
actions. It is hoped that COSMO will prove an additional learning
tool for ICZM practitioners and enhance the value of the book. This
work is intended to give a broad coverage of conceptual and
technical aspects of ICZM, and will be of use to operational
executives as well as students of ICZM, environmental economists,
policy-makers and senior managers in the international development
agencies and governmental and non-governmental organizations. It
can be recommended as a textbook and as a reference work.
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