4,062 research outputs found
The skeletal carbonate contribution to mixed terrigenous-carbonate sediments on the temperate northeastern Northland continental shelf, New Zealand
No full textThe northeastern Northland continental shelf (NNCS) includes the coastal, shelf and uppermost slope seafloor out to depths of 210 m and over a distance of 150 km between North Cape and Ngurauru Bay slightly north of Whangarei. The nature of the surficial sediments covering NNCS is poorly known and this study uses archived and recently collected samples to begin to address this situation, with special attention to the nature and distribution of the skeletal carbonate fraction. The sediments are mainly neither carbonate-dominated as occurs in the Three Kings area immediately to the north, nor overwhelmingly terrigenous in nature as typifies more southern shelf sectors. Instead, mixed terrigenous-carbonate deposits prevail in an often patchwork mosaic distribution of facies. Carbonate content is often highest nearshore and in bays and harbours (50-80%), and generally decreases into deeper water (few-50%). The NNCS sediments are almost completely dominated by sand-sized components (60-90%) comprising gravelly sand, sand, muddy sand and gravelly muddy sand textures.
A sedimentary facies model is developed for the NNCS identifying five different facies. Facies 1 is siliciclastic quartzofeldspathic sand with minor bivalve contributions, occurring only in the northern sector. Subfacies 1a (quartz>feldspar) occurs at inner- to mid-shelf depths and is mainly derived from reworked Quaternary Karioitahi Group sand deposits and/or podzolisation and reworking of local soils. Subfacies 1b (feldspar>quartz) occurs in mid- to outer-shelf depths and is derived from the erosion of a combination of the Quaternary sand deposits (Katioitahi Group), Mesozoic basement rocks and Northland volcanic and sedimentary rocks. Facies 2 comprises mixed barnacle-siliciclastic gravel and sand at inner-shelf to uppermost slope depths in the northern sector and includes submarine basaltic and type 1 sedimentary rock fragments derived from Mesozoic basement rocks and the Tangihua Complex of the Northland Allochthon. Facies 3 consists of mixed calcareous red algae and bivalve-siliciclastic gravel and sand at inner- to mid-shelf depths in the southern sector and involves a mix of relict and modern skeletal material and sedimentary rock fragments type 2 sourced from Tertiary deposits. Facies 4 is mixed foraminiferal-siliciclastic sand and mud and occurs only in the very southern sector in two subfacies. Subfacies 4a, a mixed benthic foraminiferal-siliciclastic sand, occurs in mid-shelf depths and comprises plagioclase dominated siliciclastic material sourced from Mesozoic basement rocks. Subfacies 4b, a mixed planktic foraminiferal-siliciclastic sand and mud, occurs in mid- to outer-shelf depths and comprises rock fragments derived from Tertiary deposits which could also be a local source of the reworked planktic foraminifera at these depths. Facies 5 consists of mixed bryozoan-siliciclastic sand at mid-shelf depths and in scattered locations across the NNCS associated with rocky outcrops for bryozoan attachment. Siliciclastic material comprises plagioclase sand sourced from reworking of Mesozoic basement rocks, and sedimentary rock fragments type 2 sourced from Tertiary sediments.
The NNCS sedimentary facies model is compared with other temperate carbonate shelf models and carbonate-rich North Island shelf sectors, including Hauraki Gulf, Three Kings platform, north Kaipara continental margin and Wanganui shelf, which serves to both test and expand scenarios of cool-water carbonate sedimentation established for New Zealand. Overall, the mixed terrigenous-carbonate material on the NNCS comprises an often mosaic facies distribution with the skeletal fraction dominated by bivalve and barnacle fragments and a mixture of relict and modern material. These characteristics reflect several environmental controls, including (a) diversified substrate types (rock, shell, sand, mud); (b) variable supply and dispersal routes of terrigenous material linked to positions of hinterland estuaries/harbours and rocky versus sandy coastlines; (c) scattered and discrete areas of primary carbonate generation (the “carbonate factories”) and the subsequent selective transportation of skeletal grains; (d) local effects of nutrient-rich upwelling; and (e) the variable mix of relict and modern sediment associated with the post-glacial rise of sea level since about 20 ka
Sherri Scott Interview
No full textSherri Scott (Class of 1999) was interviewed by Valeria Reynosa via the Zoom internet-based video conferencing software on March 19, 2021. Ms. Scott was born into a military family and lived in South Carolina, Spain, and California before her family relocated to Abilene, Texas when she was eleven years old. During her interview, she discusses her experiences growing up on various military bases and in Abilene. She talks about her love for literature, particularly the Texas author Larry McMurtry, and how the heroine of his book The Last Picture Show inspired her to attend SMU. While at SMU, she majored in Psychology with a minor in Journalism, and pledged to the Alpha Kappa Alpha sorority. She also wrote for the Daily Campus and the Rotunda yearbook. She discusses the impact the AKA sorority had on her time at SMU, with particular regard to their community service events and outreach to the Black community in Dallas. Ms. Scott also talks about the mentors she had while at SMU and the friendships she formed, which have lasted well beyond her graduation date. After graduating in 1999, Ms. Scott worked as an associate editor at D Magazine, a production assistant in Wilmington, North Carolina, and editor-in-chief for a QSR magazine. She then began a career in public relations and marketing. At the time of the interview, she worked as as the Senior Vice President of Marketing for Public Broadcast Atlanta
Citizen participation in news
No full textThe process of producing news has changed significantly due to the advent of the Web, which has enabled the increasing involvement of citizens in news production. This trend has been given many names, including participatory journalism, produsage, and crowd-sourced journalism, but these terms are ambiguous and have been applied inconsistently, making comparison of news systems difficult. In particular, it is problematic to distinguish the levels of citizen involvement, and therefore the extent to which news production has genuinely been opened up. In this paper we perform an analysis of 32 online news systems, comparing them in terms of how much power they give to citizens at each stage of the news production process. Our analysis reveals a diverse landscape of news systems and shows that they defy simplistic categorisation, but it also provides the means to compare different approaches in a systematic and meaningful way. We combine this with four case studies of individual stories to explore the ways that news stories can move and evolve across this landscape. Our conclusions are that online news systems are complex and interdependent, and that most do not involve citizens to the extent that the terms used to describe them imply
Belonging and not belonging : understanding India in novels by Paul Scott, Ruth Prawer Jhabvala and V.S. Naipaul.
No full textPhDThis thesis is essentially about the "how" and "why" of the Indian
experience as documented in novels by Paul Scott, Ruth Prawer Jhabvala
and V S Naipaul. The study points to the difficulty of arriving at any
conclusive definition of the country and its people. I show that
differences in attitudes, responses or behaviour are both overt and
subtle, and depend upon whether the writer or the character identifies
with the situation or community with which he or she interacts. It is
the individual's sense of belonging or not belonging to his or her own
group - be this along racial, cultural or gender lines - that accounts
for the differing perspectives evident in these novels. The points-of-
view of the outsider and the insider can therefore be seen as
mutual comments upon the other.
Since the struggle between belonging and not belonging becomes acute
when the old meets the new, focus is centred on communities
experiencing change. These include the British in India, West-Indian
Indians and westernised Indians. Despite their differences, all three
communities share similar reasons for either an acceptance or
rejection of the 'Other'. The thesis argues that the need for
emotional stability compels allegiance to the traditional group, while
the desire for individuality encourages surrender to the new. The
former nurtures a sense of belonging while, it is argued, that the
latter is perceived as the hallmark of those who do not belong.
Tensions arise when both these needs demand to be met. What I show to
be ironic in this struggle between belonging and not belonging is that
those things which individuals overtly reject are often unexpressed
parts of their personal pysche. The barrier between "them" and "us" is
therefore very fragile
Phytopigment flux of the OUT-patch defined iron-fertilized area of trap T11-13_JA
No full textPhytopigment flux of the OUT-patch defined iron-fertilized area of trap T11-13_J
Particulate silica of the IN-patch defined iron-fertilized area of trap T7-9_BC
No full textParticulate silica of the IN-patch defined iron-fertilized area of trap T7-9_B
Particulate silica of the iron-fertilized area of trap T0-2
No full textParticulate silica of the iron-fertilized area of trap T0-
Particulate silica of the OUT-patch defined iron-fertilized area of trap T11-13_JA
No full textParticulate silica of the OUT-patch defined iron-fertilized area of trap T11-13_J
Footloose in Jacksonian America: Robert W. Scott and his Agrarian World
No full textIn the fall of 1829, young Robert Wilmot Scott rode away from Frankfort, Kentucky, on a trip that would take him through nine states. His journal entries about those travels present a vivid picture of Jacksonian America and of the prominent people of that era. Excellent pen portraits of James and Dolly Madison, James Monroe, John Marshall, James Buchanan, Sam Houston, Edward Everett, John C. Calhoun, John Randolph, John Quincy Adams, and others show Scott to be a careful and detailed observer. Present at the famous Webster-Hayne debate, he gives a rich account of that discussion and its personalities.
But not only people attracted Scott’s observations. In visits to Richmond, New York, Boston, Philadelphia, Washington, D.C., and Pittsburgh, among other places, he gave close attention to public buildings, universities, theaters, churches, and manufacturing establishments. His comments on culture and industry detail the quickening pulse of a burgeoning nation, and compare favorably with more familiar accounts by James Silk Buckingham or Thomas Hamilton.
In the second half of this work, author Thomas D. Clark traces the later life of this fascinating diarist. Scott became master of a model Kentucky plantation, “Locust Hill,” and proved to be an important agricultural reformer. He was active, as well, in education and in politics. In outlining the career of this agrarian, Dr. Clark has made an important contribution to the study of southern agriculture and the men who shaped it. Scott, in his diary comments, made his own contribution to history by offering fine insights about the world in which he lived.https://uknowledge.uky.edu/upk_united_states_history/1122/thumbnail.jp
Sinking rates of diatoms measured on water bottle samples during TANGAROA cruise SOIREE
No full textSETCOL method (Bienfang, 1981) modified by Waite et al. (1992a, b) using 0.5 m polycarbonate columns (volume 275 ml); sampling volume = 30 ml, sampled after 2 hour
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