R. Haworth

Between 1962 and 2003 significant coral species changes within reef assemblages at Todos os Santos Bay (TSB), Bahia (Brazil) have taken place, following what appears to have been a 400 year contraction of coral reefs from the inner, landward reaches of the bay. The last 40 years in particular encompassed rapid and extensive urban and industrial dev...

Pleistocene periglacial activity in eastern Australia was widespread and has been predicted to have extended along much of the east coast. This paper describes block deposits in the New England Tablelands, Australia, as far north as 30°S. These deposits are characterized by openwork blocks on slopes below the angle of repose. The deposits are posit...

Variations in the character of lakes along a west-east transect across the Tasmanian Central Plateau and into the Midlands graben reflect a combination of forcing processes over time, including the effects of altitude, climate and tectonics working on the local lithology and landscape. The higher altitude and precipitation in the west facilitated e...

History of the 3rd great Australian gold rush, Uralla, northern New South Wales

Issues in merging isotopic chronologies, Lead 210 and Carbon 14, from esturine sediment columns

It has previously been assumed that New England high-country environments were not conducive to intense Aboriginal occupation and associated ceremonial activities. How productive were upland wetlands (lagoons) for Aboriginal occupation of high country in eastern Australia through time? Especially during their intermittent phases, upland lagoons pro...

We present a new well dated Holocene record of environmental change from Little Llangothlin Lagoon in eastern Australia derived from aquatic plant macrofossils, macroscopic charcoal flux, and sediment stratigraphy from multiple cores. Little Llangothlin was an ephemeral freshwater wetland exhibiting frequent dry phases between 9800 and 9300 calenda...

The reconstruction of mid- to late Holocene marine environments using the calcareous remains of inter-tidal fixed biological indicators as sea level proxies is reviewed. Useful palaeo-environmental information can be obtained from the fossil evidence of successive invasions and disappearances of tropical and temperate species within the sub-fossil...

This paper suggests that collaborative design can be an effective tool to promote social change. A co-design methodology and the results of its application in branding the Waterfall Way (New South Wales, Australia) as an eco- and nature-based tourism destination are presented as an example. The co-design exercise actively involved stakeholders in a...

The vegetation of montane lagoons of the New England Tablelands Bioregion, New South Wales is examined using flexible UPGMA analysis of frequency scores on all vascular plant taxa, charophytes and one liverworts. Seven communities are described- 1. Hydrocotyle tripartita - Isotoma fluviatilis - Ranunculus inundatus - Lilaeopsis polyantha herbfield...

Abstract: The vegetation of montane lagoons of the New England Tablelands Bioregion, New South Wales is examined using flexible UPGMA analysis of frequency scores on all vascular plant taxa, charophytes and one liverworts. Seven communities are described- 1. Hydrocotyle tripartita – Isotoma fluviatilis – Ranunculus inundatus – Lilaeopsis polyantha...

There is a similarity in the pattern of Holocene sea-level change at Rottnest Island and a number of other locations in southern Western Australia. Rottnest Island was one of the field study areas that Fairbridge (1961) used to develop his fluctuating Holocene sea-level curve. Eight 14C ages obtained from fixed shell material of Serpulid tubeworms...

A high-resolution record of catchment-wide soil loss for the period c. 1806–1990 has been obtained from Little Llangothlin Lagoon on the New England Tablelands of northeast New South Wales, Australia. The mean annual rate of mineral erosion since the time of European contact in the late 1830s was 269 t km⁻². The mean rate of mineral denudation imme...

Little Llangothlin Lagoon on the New England Tablelands of northeast New South Wales possesses the most detailed and best verified ²¹⁰ Pb chronology yet available in Australia. Recent criticisms of the length of the record are shown to be based on a faulty understanding of the principles of ²¹⁰ Pb dating. Attempts to revise the chronology of the lo...

The excavation in the 1890s of a skeleton of the warm-water marine mammal Dugong dugon, associated with Aboriginal artefacts, from a Botany Bay salt marsh, marked the beginning of speculation about climate and sea level change in Australia over the period of human occupation. The dugong bones have recently been dated, giving a conventional 14C age...

The excavation in the 1890s of a skeleton of the warm-water marine mammal Dugong dugon , associated with Aboriginal artefacts, from a Botany Bay salt marsh, marked the beginning of speculation about climate and sea level change in Australia over the period of human occupation. The dugong bones have recently been dated, giving a conventional 14 C ag...

Sydney's surface geology of Hawkesbury Sandstone capped with Wianamatta Shale has produced poor soils but good building material. The topography, derived from the subaerial erosion and extensive dissection of the Permian/Triassic sedimentary strata of the Sydney Basin, has been the strongest constraint on the city's growth. Steep-sided valleys carv...

The interpretation by Yim and Huang (2002) of our discovery of a relic encrustation of the oyster (Saccostrea cucullata) 1.9 m above the comparative present intertidal zone at Big Wave Bay on Hong Kong Island needs clarification. It is unlikely that a 4–5-m-higher mid-Holocene sea level is a corollary to this discovery. Their comments related to ti...

Sydney's surface geology of Hawkesbury Sandstone capped with Wianamatta Shale has produced poor soils but good building material. The topography, derived from the subaerial erosion and extensive dissection of the Permian/Triassic sedimentary strata of the Sydney basin, has been the strongest constraint on the city's growth. Steep-sided valleys carv...

The expansion of European occupation across Australia was closely circumscribed during the first half century of the colony's existence. Despite this, there is considerable evidence of unsanctioned movements beyond the officially prescribed boundaries. Given their illegal nature, information on such movements is unlikely to be preserved in the docu...

Data relating to Holocene sea-level elevations and ages, obtained by radiocarbon dating of relict calcareous skeletons of intertidal organisms from widely spaced parts of the Australian coast, a far-field region of comparative tectonic stability, are divisible into two sets, namely: pre- and post- ca. 3600 yr BP. The older ages are from material co...

Changes in mangrove/saltmarsh distribution in the Georges River estuary, southern Sydney, 1930-1970 Robert Haworth Abstract Aerial photographs taken between 1930 and 1970 of the Georges River in southern Sydney show a rapid advance of mangroves landward (upslope) at the expense of salt-marsh, though the timing and extent of the advances was not t...

Relic inter-tidal assemblages of sessile organisms, which are referred to as fixed biological indicators (FBIs), are shown to be useful proxies for late Holocene climatic and environmental changes as well as direct indicators of short term fluctuations in sea-level. A detailed comparison of change in the inter-tidal assemblages of two Southern Hemi...

The reconstruction of mid-to late Holocene marine environments using the calcareous remains of inter-tidal fixed biological indicators as sea level proxies is reviewed. Useful palaeo-environmental information can be obtained from the fossil evidence of successive invasions and disappearances of tropical and temperate species within the sub-fossil i...

Dating of a relict shell horizon (Saccostrea cucullata) on Hong Kong Island located approximately 1.7m above present day high tide level constrains the timing of a late Holocene higher sea-level. At 5140±50yr BP sea-level in the South China area was 4–5m higher with respect to the Principal Datum (2.7m below high tide mark) than at present.

What, if any, is the pattern of change of the late Holocene sea-level curve? If a common pattern exists, can it be better discerned in the non-glaciated, tectonically stable regions of the Southern Hemisphere? And is sea level data more reliable from one type of marine sample than another? To begin an investigation of these questions, we present a...

The nature of late Holocene sea-level change has important palaeo-environmental implications for the understanding of past and present coastal, oceanic and climatic systems. This study develops a fixed biological indicator (FBI) method based on tubeworm–barnacle assemblages in order to construct a late Holocene sea-level curve for south east Austra...

Lead-210 methods have been used to establish a chronology of sedimentation extending back almost 80 years in Black Mountain Lagoon near Guyra on the New England Tablelands of north-eastern New South Wales, Australia. Estimates of the direct atmospheric fallout of unsupported Pb and historical records of the pattern of phosphorus input to the lake p...

New evidence from dating the fossil residue of intertidal organisms on the central New South Wales coast extends the findings of an earlier use of this method and supports the case for a regional highstand between 1 and 2 m above present relative sea level for much of the middle to late Holocene. Evidence demonstrating a vertical shift over time by...

With a range in excess of 150 years under optimum conditions, Lead-210 dating represents a valuable tool for studying recent human impacts on the environment, particularly the effects of European settlement in Australia. It is therefore also useful for establishing the start of the pre-European record in a sediment profile. Despite these advantages...

We report here the results of detailed 210Pb analysis of a sequence of lake sediments from Little Llangothlin Lagoon on the New England Tablelands of New South Wales, Australia. 210Pb dating has been rarely employed in Australia and prior to this work no attempt had been made to evaluate the method using independent dating techniques. The chronolog...

The Clarence River on Australia's east coast has an anomalous drainage pattern. Its right-bank tributaries are markedly barbed, suggesting reversal, whereas Tertiary volcanism has disrupted its left-bank drainage. The southeast-flowing Clarence is closely aligned with the northwest-flowing Condamine River just across the Continental Divide. The Con...

This paper suggests that collaborative design can be an effective tool to promote social change. A co-design methodology and the results of its application in branding the Waterfall Way (New South Wales, Australia) as an eco- and nature-based tourism destination are presented as an example. The co-design exercise actively involved stakeholders in a...

In this research we used inductive reasoning through design to understand how stakeholders in the Waterfall Way (New South Wales, Australia) perceive the relationships between themselves and the place they live in. This paper describes a collaborative design methodology used to release information about local identities, which guided the regional b...