Oldham covers a lot of ground in this decade, starting with a description of his findings of permo-carboniferous glaciation in Australia, and a description of river avulsion in the Punjab. His summary of all available articles on the Geology of India in 1888 was a prelude to him rewriting the Manual of Geology in 1893. He gave copy of his bibliography to the Judd Library with the following inscription:

William Erskine Baker of the Royal Engineers intended the 53 km long cross-section from which the above section was drafted to accompany his 1846 article on leveling northward from the Allah Bund, but the plate was ommitted from his article and lost for 42 years until re-discovered by Oldham (1898) in Bombay. The importance of this leveling line is that until the turn of the millennium was the only geodetic measurement of across the Allah Bund. In a discussion meeting at the Royal Geographical Society in London, following a presentation by Freyre, Oldham owned to never having visited the Allah Bund, yet his discovery of Wynne's copy of Baker's profile marked a turning point in its study.

1886

Memorandum on the correlation of Indian and Australian coal measures, Rec. Geol. Surv. India,19, 39-47, (1886) ice scratched boulders in the marine conglomerate above the Greta Seam of the lower coal measures (mentioned in letter from C S Wilkinson, Sydney (29Sept 1886)

Memorandum on the prospects of finding coal in Western Rajputna. Rec. Geol. Surv. India,19, 127-131, (1886).

A note on the Olive Group of the Salt Range. Rec. Geol. Surv. India,19, 122-127, (1886).

Preliminary note on the Geology of Northern Jessalmer. Rec. Geol. Surv. India,19, 157-161, (1886).

On probable changes in the geography of the Punjab and its rivers: an Historico-geographical study. J. Asiatic Soc. Bengal 55(2), 322-343, (1887) ; Proc. Asiatic Soc. Bengal 171-175, (1886)

Essays on speculative Geology: 1. On homotaxis and contemporaneity. Geol. Mag., 23(7), 293-300

Essays on speculative Geology: 2 On probable changes of latitude Geol. Mag., 23(7), 300-308

1887

A note on the facetted pebbles from the Olive Group of the Salt Range, Punjab. Geol. Mag, 3rd decade, 3, 32-35 (1887)

The gneissose rocks of the Himalaya, Geol. Mag. 3rd decade 3, 461-465 (1887)

Preliminary sketch of the geology of Simla and Jutogh: Rec. Geol. Surv. India,20,143-153, (1887) with map

Note on some points in Himalayan Geology, Rec. Geol. Surv. India,20, 155-161 (1887)

1888

On the law Law that governs the Action of Flowing Streams. Q. J. Geol. Soc, 44, 1888, 734- 13.

Memorandum on the results of an Exploration of Jessalmer with a view to the discovery of Coal, Rec. Geol.Surv. India, 21(1), 30-32, 1888.

Note on Blown-Sand Rock sculpture. Rec. Geol.Surv. India, 21, 159-160, (1888) With one plate.

A bibliography of Indian Geology being a list of books and papers relating to the Geology of British India and adjoining countries, published to the end of A. D. 1887, printed by the Superintendent, Government Printing Press Calcutta, 1888.

Some notes on the geology of the North West Himalayas, Rec. Geol. Surv. of India, 21(4), (1888)

The Sequence and correlation of pre-Tertiary Sedimentary formations of the Simla Region of the lower Himalayas, Rec. Geol.Surv. India, 21(3), 130-143 (1888) Google Access

1889

On flexible sandstone or Itacolumite with special reference to its nature and occurrence in India and the cause for its flexibility, Rec. Geol.Soc India, 22(1), 51-55, 1889 (two plates)

1890

Special report on the most favorable sites for petroleum explorations in the Harnai district, Baluchistan, Rec. Geol. Surv. of India, 23(2), , (1890)

Report on the Geology and economic resources of the country adjoining the Sind Pishin Railway line between Sharigh and Spintangi, and of the country between it and Khattan. Rec. Geol. Surv. of India, 23(3), 93-110, (1890)

A deep boring at Lucknow, Rec. Geol. Surv. of India, 24(4), 261-266, 1890. [Artesian pressures with slow flow rates obtained from a 1200' borehole]

1891

The Age and Origin of the Himalayas, with especial reference to the Rev. O. Fisher's theory of Mountain Formation. Geol. Mag. New Series, Decade 3 8(2) 8-70, Essays in theoretical Geology, 8-18. (1891)

Preliminary report on the oil locality near Moghal Kot, in the Sherani country, Suleiman hills. Rec. Geol. Surv. of India, 24(2), (1891)

1892

Report on the geology of Thal Chotiali and part of the Mari country, Records of the Geological Survey of India, 25(1), 18-29, or 145-192, (1892). (Suess cites pages 18-29)

Subrecent and recent deposits of the valley plains of Quetta and the Dasht-i-Bedaoliat; with appendices on the Chamans of Quetta ; and the artesian water supply of Quetta and Pishin. Records of the Geological Survey of India, 25(2) , , (1892)

1893

A Manual of the Geology of India Chiefly compiled from the observations of the Geological Survey 2nd edition revised and largely rewritten by R. D. Oldham, 543pp. Government of India, Calcutta (1893).

The river valleys of the Himalayas, J. Manchester Geog. Soc. 9 112-125 (1893)

Note on the alluvial deposits and subterranean water supply of Rangoon. Rec. Geol. Surv. India, 26(2), 64-70, (1893).

On a deep boring at Chandernagore, Rec. Geol. Surv. India, 26(3), 100-102, (1893).

The Bacchus Marsh Boulder Beds, Nature 48, 416 (31 August 1893) | doi:10.1038/048416b0;

Rock Basins in the Himalayas, Nature 49, 77 (23 November 1893) | doi:10.1038/049077a0;

The Origin of Lake Basins,Nature 49, 197 (28 December 1893) | doi:10.1038/049197b0;

1894

The Origin of Rock Basins,Nature 49, 292-293 (25 January 1894) doi:10.1038/049292b0 Letter

Oldham, R. D. “The Petroleum Fields of India: Their Present Condition and Their Probable Future.” Journal of the Society of Arts 42 (1894): 114-156.

The Evolution of Indian Geography, The Geographical Journal 3(3), 169-192, (1894)doi:10.2307/1773463

A comparison of the Permian breccias of the Midlands with the Upper Carboniferous glacial deposits of India and Australia, Q. J. Geol. Soc., 51, 463-471, 1894

1895

The alleged Miocene man in Burma. Natural Science 7 , 201.

On some outliers of the Vindhyan sustem south of the Son and their relationto to the so-called lower Vindhyans. Rec Geol. Soc India, 28(4), 139-144, 1895 [Plate 5 illustrates in black and white three cross-sections.]

1897

Introduction, i-viii, to Holland T. H., Report on the Geological Structure and stability of the Hill Slopes around Naini Tal, pp.132. Government Printing Office, Calcutta 1897.

On a plant of Glossopteris with part of the rhizome attached and on the structure of the Vertebraria. Rec Geol. Soc India 30(4), 139-144, 1897

Note on the 12 June earthquake Rec Geol. Soc India, 30(3), 130-132, 1897

1898

A note on the Allah Bund in the northwest of the Runn of Cutch, Mem. Geol. Surv. India, 28(1), 27-30, Calcutta 1898

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